CVE-2026-86142CWE-122

CVE-2026-86142

Medium · published September 5, 2026

CVSS v3.1
6.9
EPSS
0%
Percentile
4.4
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.9 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
CVSS v4.0
Not supplied
EPSS
0.00157 · 4.4th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-09-05T09:17Z
Affected products (1)
ProductVersionsFixed in
xmlsoft/libxml2< 2.15.42.15.4
References (3)
https://github.com/GNOME/libxml2/commit/6b3a736c0edc74ceec3d82f5252499d7911b3a58 · [email protected]https://github.com/GNOME/libxml2/compare/v2.15.3...v2.15.4 · [email protected]https://gitlab.gnome.org/GNOME/libxml2/-/work_items/1113 · [email protected]
EPSS history
Timeline
  • 06 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 05 SEP 04:29Z
    In libxml2 before 2.15.4, there is a heap-based buffer overflow in xmlXPtrEvalXPtrPart because of xmlXPtrEval xpointer length saturation
    cvelistv5