CVE-2026-86140

State: Published
Severity: 8.0 High
Published: Sep 5, 2026
Updated: Sep 8, 2026
Reserved: Sep 5, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	8.0 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L	mitre

Weaknesses

CWE-121 Stack-based Buffer Overflow

Affected Products

Product	Versions
libxml2xmlsoft	before 2.15.4Affected

References

https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4
https://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340

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