CVE-2026-86140

high

Description

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

References

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

https://github.com/GNOME/libxml2/commit/d1686f91dbda141a752200419d35639fd6b38340

Details

Source: Mitre, NVD

Published: 2026-09-05

Updated: 2026-09-05

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:P

Severity: Medium

CVSS v3

Base Score: 8

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

Severity: High

EPSS

EPSS: 0.00136