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18 vulnerabilities by xmlsoft
CVE-2026-86144 (GCVE-0-2026-86144)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:34 – Updated: 2026-09-08 13:04
VLAI
EPSS
VEX
Summary
In xinclude in libxml2 before 2.15.4, xmlXIncludeProcess and xmlXIncludeProcessTree do not propagate parseFlags. This has security relevance for, for example, the XML_PARSE_NONET flag, if (without it) a custom resource loader accesses the internet and triggers XML external entity injection, SSRF, or a denial of service (e.g., for an attacker-controlled internet resource that is intentionally slow).
Severity
5.6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:04 UTC
CWE
- CWE-669 - Incorrect Resource Transfer Between Spheres
Assigner
References
Impacted products
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CVE-2026-86143 (GCVE-0-2026-86143)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:31 – Updated: 2026-09-08 18:06
VLAI
EPSS
VEX
Summary
In xmlIO in libxml2 before 2.15.4, an inconsistency in xmlOutputWriteCallback and xmlBufUse causes negative lengths to reach write callbacks, aka a lack of a check for integer overflow before calling writecallback. This has security relevance for many types of uses of that length value within a callback.
Severity
6.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:05 UTC
CWE
- CWE-192 - Integer Coercion Error
Assigner
References
Impacted products
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CVE-2026-86142 (GCVE-0-2026-86142)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:29 – Updated: 2026-09-14 13:50
VLAI
EPSS
VEX
Summary
In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.
Severity
6.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 13:26 UTC
CWE
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
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CVE-2026-86141 (GCVE-0-2026-86141)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:27 – Updated: 2026-09-09 19:15
VLAI
EPSS
VEX
Summary
xmlregexp in libxml2 before 2.15.4 has a NULL pointer dereference in xmlRegNewParserCtxt after a strdup failure, i.e., it does not calculate a string length after NULL checking.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 19:15 UTC
CWE
- CWE-252 - Unchecked Return Value
Assigner
References
Impacted products
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CVE-2026-86140 (GCVE-0-2026-86140)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:26 – Updated: 2026-09-08 18:06
VLAI
EPSS
VEX
Summary
In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat stack-based buffer overflow.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:06 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
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CVE-2026-86139 (GCVE-0-2026-86139)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:23 – Updated: 2026-09-08 13:04
VLAI
EPSS
VEX
Summary
In libxml2 before 2.15.4, xmlURIEscapeStr in uri.c has an integer overflow.
Severity
6.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 13:04 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
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CVE-2026-86138 (GCVE-0-2026-86138)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:21 – Updated: 2026-09-08 18:04
VLAI
EPSS
VEX
Summary
In libxml2 before 2.15.4, xmlDictAddQString in dict.c has an integer overflow and resultant heap-based buffer overflow.
Severity
6.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 18:04 UTC
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
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CVE-2026-86137 (GCVE-0-2026-86137)
Vulnerability from cvelistv5 – Published: 2026-09-05 04:19 – Updated: 2026-09-14 13:50
VLAI
EPSS
VEX
Summary
In libxml2 before 2.15.4, xmlFAParsePosCharGroup has an out-of-bounds read, aka an out-of-bounds read in the NXT macro in xmlregexp.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 13:26 UTC
CWE
- CWE-125 - Out-of-bounds Read
Assigner
References
Impacted products
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CVE-2026-11979 (GCVE-0-2026-11979)
Vulnerability from cvelistv5 – Published: 2026-06-29 13:21 – Updated: 2026-06-29 13:59 X_Open Source Disputed
VLAI
EPSS
VEX
Title
Stack-Based Buffer Overflow in libxml2
Summary
libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper bounds checking.
By supplying an overly long input line, an attacker can overflow internal buffers (command, arg, and argv) during input parsing. This results in memory corruption within the stack frame.
Successful exploitation may cause a crash or potentially allow arbitrary code execution in the context of the xmlcatalog process.
This issue has been fixed in the commit c2e233fc.
NOTE:
The maintainers of this project did not agree that this issue is a vulnerability and considered it a bug.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-29 13:59 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/06/CVE-2026-11979 | third-party-advisory |
| https://gitlab.gnome.org/GNOME/libxml2/-/commit/c… | patch |
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CVE-2025-32415 (GCVE-0-2025-32415)
Vulnerability from cvelistv5 – Published: 2025-04-17 00:00 – Updated: 2025-11-03 19:53
VLAI
EPSS
VEX
Summary
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Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-17 18:38 UTC
CWE
- CWE-1284 - Improper Validation of Specified Quantity in Input
Assigner
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Impacted products
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CVE-2025-32414 (GCVE-0-2025-32414)
Vulnerability from cvelistv5 – Published: 2025-04-08 00:00 – Updated: 2025-11-03 19:53
VLAI
EPSS
VEX
Summary
In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the Python API (Python bindings) because of an incorrect return value. This occurs in xmlPythonFileRead and xmlPythonFileReadRaw because of a difference between bytes and characters.
Severity
5.6 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-09 14:56 UTC
CWE
- CWE-393 - Return of Wrong Status Code
Assigner
References
Impacted products
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CVE-2024-55549 (GCVE-0-2024-55549)
Vulnerability from cvelistv5 – Published: 2025-03-14 00:00 – Updated: 2025-11-03 20:48
VLAI
EPSS
VEX
Summary
xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result prefixes.
Severity
7.8 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-14 19:26 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
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CVE-2025-24855 (GCVE-0-2025-24855)
Vulnerability from cvelistv5 – Published: 2025-03-14 00:00 – Updated: 2026-02-26 19:09
VLAI
EPSS
VEX
Summary
numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath context node can be modified but never restored. This is related to xsltNumberFormatGetValue, xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-02 03:55 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
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CVE-2025-27113 (GCVE-0-2025-27113)
Vulnerability from cvelistv5 – Published: 2025-02-18 00:00 – Updated: 2025-11-03 21:13
VLAI
EPSS
VEX
Summary
libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a NULL pointer dereference in xmlPatMatch in pattern.c.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-19 15:33 UTC
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
11 references
Impacted products
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CVE-2025-24928 (GCVE-0-2025-24928)
Vulnerability from cvelistv5 – Published: 2025-02-18 00:00 – Updated: 2026-02-26 19:08
VLAI
EPSS
VEX
Summary
libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a stack-based buffer overflow in xmlSnprintfElements in valid.c. To exploit this, DTD validation must occur for an untrusted document or untrusted DTD. NOTE: this is similar to CVE-2017-9047.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-07-23 03:55 UTC
CWE
- CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
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CVE-2024-56171 (GCVE-0-2024-56171)
Vulnerability from cvelistv5 – Published: 2025-02-18 00:00 – Updated: 2025-11-03 20:49
VLAI
EPSS
VEX
Summary
libxml2 before 2.12.10 and 2.13.x before 2.13.6 has a use-after-free in xmlSchemaIDCFillNodeTables and xmlSchemaBubbleIDCNodeTables in xmlschemas.c. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-19 16:26 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
11 references
Impacted products
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CVE-2022-49043 (GCVE-0-2022-49043)
Vulnerability from cvelistv5 – Published: 2025-01-26 00:00 – Updated: 2025-11-03 20:35
VLAI
EPSS
VEX
Summary
xmlXIncludeAddNode in xinclude.c in libxml2 before 2.11.0 has a use-after-free.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-27 14:52 UTC
CWE
- CWE-416 - Use After Free
Assigner
References
Impacted products
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CVE-2024-34459 (GCVE-0-2024-34459)
Vulnerability from cvelistv5 – Published: 2024-05-13 00:00 – Updated: 2025-11-04 22:06
VLAI
EPSS
VEX
Summary
An issue was discovered in xmllint (from libxml2) before 2.11.8 and 2.12.x before 2.12.7. Formatting error messages with xmllint --htmlout can result in a buffer over-read in xmlHTMLPrintFileContext in xmllint.c.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-08-22 17:18 UTC
CWE
- n/a
- CWE-122 - Heap-based Buffer Overflow
Assigner
References
10 references
Impacted products
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