Vulnerability-Lookup

UBUNTU-CVE-2026-95616 (CVE-2026-95616)

Vulnerability from osv_ubuntu – Published: 2026-10-02 00:00 – Updated: 2026-10-02 00:00 – Source website

Details

An integer overflow in WSS4J's DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7FFFFFFF; WSS4J decodes this while resolving the signature's key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-95616	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-95616	REPORT
	https://lists.apache.org/thread.html/sdf0fsphkg4q…	REPORT
	http://www.openwall.com/lists/oss-security/2026/0…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwss4j-java",
            "binary_version": "1.6.15-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "wss4j",
        "purl": "pkg:deb/ubuntu/wss4j@1.6.15-2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "1.6.15-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwss4j-java",
            "binary_version": "1.6.19-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "wss4j",
        "purl": "pkg:deb/ubuntu/wss4j@1.6.19-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
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      ],
      "versions": [
        "1.6.19-1"
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    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwss4j-java",
            "binary_version": "1.6.19-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "wss4j",
        "purl": "pkg:deb/ubuntu/wss4j@1.6.19-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
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              "introduced": "0"
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          "type": "ECOSYSTEM"
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      ],
      "versions": [
        "1.6.19-2"
      ]
    },
    {
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          {
            "binary_name": "libwss4j-java",
            "binary_version": "1.6.19-2"
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      "package": {
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        "purl": "pkg:deb/ubuntu/wss4j@1.6.19-2?arch=source\u0026distro=jammy"
      },
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          "type": "ECOSYSTEM"
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      "versions": [
        "1.6.19-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwss4j-java",
            "binary_version": "1.6.19-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "wss4j",
        "purl": "pkg:deb/ubuntu/wss4j@1.6.19-3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.19-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwss4j-java",
            "binary_version": "1.6.19-4build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "wss4j",
        "purl": "pkg:deb/ubuntu/wss4j@1.6.19-4build1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
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            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.19-4",
        "1.6.19-4build1"
      ]
    }
  ],
  "aliases": [],
  "details": "An integer overflow in WSS4J\u0027s DER bounds check lets an oversized allocation pass validation. An unauthenticated attacker can send a SOAP message carrying an X.509 certificate whose SubjectKeyIdentifier extension declares a length of 0x7FFFFFFF; WSS4J decodes this while resolving the signature\u0027s key reference, before the message is authenticated, so an eleven-byte extension triggers a 2 GB allocation. Repeated requests exhaust server memory. Users are recommended to upgrade to versions 4.0.2 or 3.0.6 or 2.4.4, which fix this issue.",
  "id": "UBUNTU-CVE-2026-95616",
  "modified": "2026-10-02T00:00:00Z",
  "published": "2026-10-02T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-95616"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-95616"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread.html/sdf0fsphkg4qbj7nh2brjgwvcmd67hct"
    },
    {
      "type": "REPORT",
      "url": "http://www.openwall.com/lists/oss-security/2026/09/30/14"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-95616"
  ]
}

CVE-2026-95616 (GCVE-0-2026-95616)

Vulnerability from cvelistv5 – Published: 2026-09-30 12:25 – Updated: 2026-09-30 13:17

Title

Apache WSS4J: Unauthenticated denial of service via integer overflow in DER parsing of X.509 certificate extensions

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-30 12:43 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

apache mitre root

References

2 references

URL	Tags
https://lists.apache.org/thread.html/sdf0fsphkg4q…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/0…

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache WSS4J	Affected: 4.0.0 , < 4.0.2 (semver) Affected: 3.0.0 , < 3.0.6 (semver) Affected: 0 , < 2.4.4 (semver)

Show details on NVD website

JSON

To clipboard

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              "confidentialityImpact": "NONE",
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              "scope": "UNCHANGED",
              "userInteraction": "NONE",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

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Confirmed: The vulnerability has been validated from an analyst's perspective.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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UBUNTU-CVE-2026-95616 (CVE-2026-95616)

CVE-2026-95616 (GCVE-0-2026-95616)

Tags

Sightings

Nomenclature

Related by attack behaviour