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
0.01% (1st percentile)

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  • Snyk IDSNYK-ALPINE320-EXPAT-15199477
  • published4 Feb 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 Alpine:3.20 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 Alpine. See How to fix? for Alpine:3.20 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