Expired Pointer Dereference Affecting expat-devel package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.11% (2nd percentile)

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  • Snyk IDSNYK-RHEL7-EXPATDEVEL-17543459
  • published26 Jun 2026
  • disclosed21 Jun 2026

Introduced: 21 Jun 2026

NewCVE-2026-56412  (opens in a new tab)
CWE-825  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 expat-devel.

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 RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.

CVSS Base Scores

version 3.1