CVE-2026-86140

In libxml2 before 2.15.4, xmlSnprintfElements in valid.c has a strcat stack-based buffer overflow.

CVSS v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 2.5 / Impact : 5.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340	Patch
https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4	Release Notes

Configurations

Configuration 1 (hide)

cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-09-05 05:17

Updated : 2026-09-15 19:39

NVD link : CVE-2026-86140

Mitre link : CVE-2026-86140

CVE.ORG link : CVE-2026-86140

JSON object : View

Products Affected

xmlsoft

libxml2

CWE

CWE-121

Stack-based Buffer Overflow

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