NULL Pointer Dereference Affecting expat package, versions <2.7.4-r0


Severity

Recommended
0.0
low
0
10

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Threat Intelligence

EPSS
0.19% (9th percentile)

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  • Snyk IDSNYK-WOLFILATEST-EXPAT-17762712
  • published1 Jul 2026
  • disclosed23 Jan 2026

Introduced: 23 Jan 2026

CVE-2026-24515  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Wolfi expat to version 2.7.4-r0 or higher.

NVD Description

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

In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data.

CVSS Base Scores

version 3.1