Use After Free Affecting expat-devel package, versions <0:2.7.3-1.el10_2.3


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-ROCKY10-EXPATDEVEL-19664311
  • published10 Sept 2026
  • disclosed4 Jun 2026

Introduced: 4 Jun 2026

CVE-2026-50219  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:10 expat-devel to version 0:2.7.3-1.el10_2.3 or higher.
This issue was patched in RLSA-2026:64810.

NVD Description

Note: Versions mentioned in the description apply only to the upstream expat-devel package and not the expat-devel package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:10 relevant fixed versions and status.

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,

CVSS Base Scores

version 3.1