Use After Free Affecting libexpat1 package, versions <2.8.4-160000.1.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-SLES1600-LIBEXPAT1-20306240
  • published30 Sept 2026
  • disclosed24 Sept 2026

Introduced: 24 Sep 2026

NewCVE-2026-76957  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade SLES:16.0.0 libexpat1 to version 2.8.4-160000.1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libexpat1 package and not the libexpat1 package as distributed by SLES. See How to fix? for SLES:16.0.0 relevant fixed versions and status.

libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.

CVSS Base Scores

version 3.1