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148 vulnerabilities found for Apache Tomcat by Apache Software Foundation
CVE-2026-87022 (GCVE-0-2026-87022)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:32 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: WebSocket message smuggling with per-message-deflate
Summary
Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 14:27 UTC
CWE
- CWE-130 - Improper handling of length parameter inconsistency
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/ypvlkjqsq0480fnk9… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.25
(semver)
Affected: 10.1.0-M1 , ≤ 10.1.59 (semver) Affected: 9.0.0.M1 , ≤ 9.0.121 (semver) Affected: 8.5.0 , ≤ 8.5.100 (semver) Affected: 7.0.56 , ≤ 7.0.109 (semver) |
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CVE-2026-86350 (GCVE-0-2026-86350)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:31 – Updated: 2026-09-23 16:17
VLAI
EPSS
VEX
Title
Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up
Summary
Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up.
This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 16:16 UTC
CWE
- CWE-444 - Inconsistent interpretation of HTTP requests ('HTTP Request/Response smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/mss45z99lcdd5dtpg… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.22 , ≤ 11.0.25
(semver)
Affected: 10.1.55 , ≤ 10.1.59 (semver) Affected: 9.0.118 , ≤ 9.0.121 (semver) |
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CVE-2026-86248 (GCVE-0-2026-86248)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:29 – Updated: 2026-09-23 16:14
VLAI
EPSS
VEX
Title
Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled
Summary
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 16:14 UTC
CWE
- CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled
- CWE-287 - Improper Authentication
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/nmkmjp9l53y8h3oc4… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M14 , ≤ 11.0.25
(semver)
Affected: 10.1.22 , ≤ 10.1.59 (semver) Affected: 9.0.92 , ≤ 9.0.121 (semver) |
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CVE-2026-79677 (GCVE-0-2026-79677)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:28 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout
Summary
Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 16:05 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/bzwps6ck4szf2hmks… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.25
(semver)
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CVE-2026-78437 (GCVE-0-2026-78437)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:26 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: HTTP/2 DoS via malformed request
Summary
Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause one request from another user to fail.
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Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 16:25 UTC
CWE
- CWE-459 - Incomplete cleanup
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/qkmsos3s8chn5053q… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
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|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.19 , ≤ 11.0.25
(semver)
Affected: 10.1.53 , ≤ 10.1.59 (semver) Affected: 9.0.116 , ≤ 9.0.121 (semver) Unaffected: 0 , ≤ 8.5.100 (semver) |
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CVE-2026-78383 (GCVE-0-2026-78383)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:23 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: AJP DoS via missing request body
Summary
Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP request to pin an AJP processing thread leading to denial of service.
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Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:44 UTC
CWE
- CWE-770 - Allocation of resources without limits or throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/tyqcqk99g7ghgk226… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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1 product
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| Apache Software Foundation | Apache Tomcat |
Affected:
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CVE-2026-77791 (GCVE-0-2026-77791)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:20 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: DoS via busy wait during WebSocket close
Summary
Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack.
This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.88 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 12:44 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/mb1pjjooqytrl6hbv… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
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CVE-2026-77762 (GCVE-0-2026-77762)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:19 – Updated: 2026-09-30 14:50
VLAI
EPSS
VEX
Title
Apache Tomcat: Stale HPACK emitter injects trailers into recycled pooled Request
Summary
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.39 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:40 UTC
CWE
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/y5r9fvjo7ol24mkoy… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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1 product
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|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.25
(semver)
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CVE-2026-77756 (GCVE-0-2026-77756)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:18 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: Transfer-Encoding honored for HTTP/1.0 requests
Summary
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse proxy.
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known to be affected: from 8.5.67 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 13:18 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/bl5b6rxqh3vb2k9bj… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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1 product
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CVE-2026-76183 (GCVE-0-2026-76183)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:16 – Updated: 2026-09-30 14:54
VLAI
EPSS
VEX
Title
Apache Tomcat: Bypass of security constraints for WebSocket endpoints
Summary
Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOS at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:33 UTC
CWE
- CWE-289 - Authentication Bypass by Alternate Name
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/45mxk8nj2q8pkhct6… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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| Apache Software Foundation | Apache Tomcat |
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CVE-2026-75973 (GCVE-0-2026-75973)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:14 – Updated: 2026-09-23 18:10
VLAI
EPSS
VEX
Title
Apache Tomcat: Cross-context authentication mix-up with Jakarta Authentication configured
Summary
Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web applications.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M4 through 9.0.121.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:28 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/njjcdkkzqyzx4n3ff… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
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|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.25
(semver)
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CVE-2026-73581 (GCVE-0-2026-73581)
Vulnerability from cvelistv5 – Published: 2026-09-23 11:08 – Updated: 2026-09-30 14:53
VLAI
EPSS
VEX
Title
Apache Tomcat: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore
Summary
Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0-M1 through 9.0.121.
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Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-23 15:19 UTC
CWE
- CWE-299 - Improper Check for Certificate Revocation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/r0dj3h1pbn4wv96fh… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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1 product
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CVE-2026-73180 (GCVE-0-2026-73180)
Vulnerability from cvelistv5 – Published: 2026-08-25 22:01 – Updated: 2026-08-26 18:35
VLAI
EPSS
VEX
Title
Apache Tomcat: Authenticated WebSocket session survives end of HTTP session
Summary
Insufficient Session Expiration vulnerability in Apache Tomcat meant that if the session ID for an authenticated HTTP session was changed after a WebSocket connection had been established under that authenticated HTTP session, the WebSokcet session would not be closed as required by the Jakarta WebSocket specification when the HTTP session ended.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
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Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
6.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:34 UTC
CWE
- CWE-613 - Insufficient Session Expiration
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/3j15vztszpyqss253… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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CVE-2026-68763 (GCVE-0-2026-68763)
Vulnerability from cvelistv5 – Published: 2026-08-25 22:00 – Updated: 2026-08-26 18:36
VLAI
EPSS
VEX
Title
Apache Tomcat: DoS via allocation leak in HTTP/2 backlog tracking when a stream is reset
Summary
Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:36 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
Impacted products
1 product
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CVE-2026-68569 (GCVE-0-2026-68569)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:59 – Updated: 2026-09-21 11:06
VLAI
EPSS
VEX
Title
Apache Tomcat: Principal lookup can fail open in some cases
Summary
Improper Authentication vulnerability in Apache Tomcat meant that in some circumstances (e.g. CLIENT-CERT, SPNEGO) that a user would be authenticated even if the user did not exist in the DataSourceRealm.
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The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:38 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
Impacted products
1 product
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| Apache Software Foundation | Apache Tomcat |
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CVE-2026-68525 (GCVE-0-2026-68525)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:57 – Updated: 2026-08-26 18:40
VLAI
EPSS
VEX
Title
Apache Tomcat: Redirect after FORM auth may bypass method specific constraints
Summary
Incorrect Authorization vulnerability in Apache Tomcat's FORM authentication process allows the bypassing of a security constraint that limits user has access to a resource POST but not GET.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fixes the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:40 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
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| Apache Software Foundation | Apache Tomcat |
Affected:
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CVE-2026-66422 (GCVE-0-2026-66422)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:55 – Updated: 2026-08-26 18:52
VLAI
EPSS
VEX
Title
Apache Tomcat: Servlet role references can bypass declarative role constraints
Summary
Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole().
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The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.46 through 8.5.100, from 7.0.97 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 18:52 UTC
CWE
- CWE-285 - Improper Authorization
Assigner
References
2 references
Impacted products
1 product
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|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
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CVE-2026-65927 (GCVE-0-2026-65927)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:53 – Updated: 2026-08-26 15:22
VLAI
EPSS
VEX
Title
Apache Tomcat: RewriteValve [N] restarts at the second rule and may bypass access control
Summary
Off-by-one Error vulnerability in Apache Tomcat impacting the [N] flag on the rewrite valves causes rewrite processing to restart at the second rule rather than the first rule.
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Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:21 UTC
CWE
- CWE-193 - Off-by-one Error
Assigner
References
2 references
Impacted products
1 product
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CVE-2026-65905 (GCVE-0-2026-65905)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:51 – Updated: 2026-08-26 15:21
VLAI
EPSS
VEX
Title
Apache Tomcat: Limited replay attack possible with DIGEST authentication
Summary
Authentication Bypass by Capture-replay vulnerability in Apache Tomcat's DIGEST authenticator. If, before windowSize requests have been made, a client makes a DIGEST
authenticated request with a nonceCount on the upper boundary of the
replay window then that request is replayable once only while the
associated nonceCount remains within the replay window.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
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Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:20 UTC
CWE
- CWE-294 - Authentication Bypass by Capture-replay
Assigner
References
2 references
Impacted products
1 product
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| Apache Software Foundation | Apache Tomcat |
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CVE-2026-65637 (GCVE-0-2026-65637)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:49 – Updated: 2026-08-26 15:20
VLAI
EPSS
VEX
Title
Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete
Summary
Improper Input Validation vulnerability in Apache Tomcat due to incomplete fix for CVE-2026-32990.
This issue affects Apache Tomcat: from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, from 9.0.115 through 9.0.120.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:20 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
1 reference
| URL | Tags |
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| https://lists.apache.org/thread/djog953z1ohsyt25b… | vendor-advisory |
Impacted products
1 product
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Affected:
11.0.20 , ≤ 11.0.24
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Affected: 10.1.53 , ≤ 10.1.57 (semver) Affected: 9.0.115 , ≤ 9.0.120 (semver) |
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CVE-2026-65183 (GCVE-0-2026-65183)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:44 – Updated: 2026-08-26 15:19
VLAI
EPSS
VEX
Title
Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets
Summary
Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Apache Tomcat when creating unix domain sockets allows an unauthorised local user to access the unix domain socket.
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Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:18 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
Impacted products
1 product
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CVE-2026-65182 (GCVE-0-2026-65182)
Vulnerability from cvelistv5 – Published: 2026-08-25 21:43 – Updated: 2026-08-26 15:18
VLAI
EPSS
VEX
Title
Apache Tomcat: Bypass longest prefix security constraint
Summary
Improper Access Control, Incorrect Authorization vulnerability in Apache Tomcat leads to security constraint bypass if a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path.
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Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:17 UTC
Assigner
References
2 references
Impacted products
1 product
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Affected:
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CVE-2026-66299 (GCVE-0-2026-66299)
Vulnerability from cvelistv5 – Published: 2026-07-28 14:29 – Updated: 2026-07-28 17:40
VLAI
EPSS
VEX
Title
Apache Tomcat: DoS via WebSocket chat example
Summary
Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example.
This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue.
Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 17:39 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/8owczcc1o8qw1rxmg… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M20 , ≤ 11.0.24
(semver)
Affected: 10.1.24 , ≤ 10.1.57 (semver) Affected: 9.0.89 , ≤ 9.0.120 (semver) Unaffected: 0 , ≤ 8.5.100 (semver) |
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CVE-2026-59084 (GCVE-0-2026-59084)
Vulnerability from cvelistv5 – Published: 2026-07-14 08:24 – Updated: 2026-07-14 13:51
VLAI
EPSS
VEX
Title
Apache Tomcat: EncryptInterceptor requirements not clearly documented
Summary
Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the EncryptInterceptor were not clearly documented.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.13 through 9.0.119, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120 which fix the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 13:51 UTC
CWE
- CWE-1059 - Insufficient Technical Documentation
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.23
(semver)
Affected: 10.1.0-M1 , ≤ 10.1.56 (semver) Affected: 9.0.13 , ≤ 9.0.119 (semver) Affected: 8.5.38 , ≤ 8.5.100 (semver) Affected: 7.0.100 , ≤ 7.0.109 (semver) |
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CVE-2026-59083 (GCVE-0-2026-59083)
Vulnerability from cvelistv5 – Published: 2026-07-14 08:13 – Updated: 2026-07-14 12:19
VLAI
EPSS
VEX
Title
Apache Tomcat: Incorrect URL decoding in RewriteValve may allow security control bypass
Summary
Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constraint bypass for some configurations.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.0.M1 through 9.0.119, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120, which fix the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-14 12:19 UTC
CWE
- CWE-177 - Improper Handling of URL Encoding (Hex Encoding)
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.23
(semver)
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CVE-2026-55957 (GCVE-0-2026-55957)
Vulnerability from cvelistv5 – Published: 2026-06-29 20:47 – Updated: 2026-06-30 13:27
VLAI
EPSS
VEX
Title
Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind
Summary
Missing Critical Step in Authentication vulnerability in Apache Tomcat when the JNDIRealm was configured to authenticate binds using GSSAPI allowed attackers to authenticate without provided the correct password.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through 9.0.100, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.
Users are recommended to upgrade to version 11.0.5, 10.1.37 or 9.0.101, which fixes the issue.
Severity
7.3 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:26 UTC
CWE
- CWE-304 - Missing Critical Step in Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/7fk339o5jvd4mcgsf… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
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| Apache Software Foundation | Apache Tomcat |
Affected:
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CVE-2026-55956 (GCVE-0-2026-55956)
Vulnerability from cvelistv5 – Published: 2026-06-29 20:46 – Updated: 2026-06-30 13:25
VLAI
EPSS
VEX
Title
Apache Tomcat: Security constraints for default servlet ignored method
Summary
Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:23 UTC
CWE
- CWE-285 - Improper Authorization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/dcjdcnnnww9hhdm01… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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1 product
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|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.22
(semver)
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CVE-2026-55955 (GCVE-0-2026-55955)
Vulnerability from cvelistv5 – Published: 2026-06-29 20:44 – Updated: 2026-06-30 13:22
VLAI
EPSS
VEX
Title
Apache Tomcat: EncryptInterceptor not protected against replay attacks
Summary
Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.
Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:21 UTC
CWE
- CWE-287 - Improper Authentication
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/g4p5sf45p3f9r011p… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
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1 product
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| Apache Software Foundation | Apache Tomcat |
Affected:
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CVE-2026-55276 (GCVE-0-2026-55276)
Vulnerability from cvelistv5 – Published: 2026-06-29 20:42 – Updated: 2026-06-30 13:59
VLAI
EPSS
VEX
Title
Apache Tomcat: Logged effective web.xml is incomplete
Summary
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.
Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119 which fixes the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 13:59 UTC
CWE
- CWE-670 - Always-Incorrect Control Flow Implementation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/jy09xjlzn6r2qwvqo… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
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|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
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(semver)
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CVE-2026-53434 (GCVE-0-2026-53434)
Vulnerability from cvelistv5 – Published: 2026-06-29 20:41 – Updated: 2026-06-30 12:28
VLAI
EPSS
VEX
Title
Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
Summary
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118.
Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-30 12:28 UTC
CWE
- CWE-390 - Detection of Error Condition Without Action
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/x510lbq0sfrd1qyo7… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
11.0.0-M1 , ≤ 11.0.22
(semver)
Affected: 10.1.0-M7 , ≤ 10.1.55 (semver) Affected: 9.0.83 , ≤ 9.0.118 (semver) Unaffected: 0 , ≤ 9.0.82 (semver) |
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