CVE-2026-86142

Published: Sep 5, 2026Modified: Sep 8, 2026

6.9

Vector

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

Exploitability: 1.4 / Impact: 5.5

Source: MITRE (Secondary)

Description

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

Related CWEs

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (3)

https://github.com/GNOME/libxml2/commit/6b3a736c0edc74ceec3d82f5252499d7911b3a58

Source: cve@mitre.org

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

Source: cve@mitre.org

https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1113

Source: cve@mitre.org

Timeline

No history available yet.