Linux · Debian · Security advisory · June 28, 2026

DEBIAN-CVE-2026-56131: expat security update

DEBIAN-CVE-2026-56131, released June 28, 2026, fixes 1 CVE in expat. None of them is reported as exploited. Patch Radar priority: Routine.

Routine
CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
4.9
Base score, 0 to 10
Highest EPSS
0.0018
7th percentile

Fixed package versions

ProductReleaseFixed in
expatDebian 12.15 (bookworm)2.5.0-1+deb12u3
expatDebian 13.5 (trixie)2.8.2-1~deb13u1
expatDebian 142.8.2-1

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Routine CVE-2026-56131 libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_ResumeParser from within handlers in cases of a policy violation. Thus, a use-after-free can occur (similar to the CVE-2026-50219 situation).4.9 0.0018 None reported
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