CVE-2026-86142

State: Published
Severity: 6.9 Medium
Published: Sep 5, 2026
Updated: Sep 14, 2026
Reserved: Sep 5, 2026

Description

In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation.

Scores

CVSS	Score	Vector	Source
3.1	6.9 Medium	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L	mitre

Weaknesses

CWE-122 Heap-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/6b3a736c0edc74ceec3d82f5252499d7911b3a58
https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1113

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