Bug 2490668 (CVE-2026-56131) - CVE-2026-56131 libexpat: libexpat: Use-after-free vulnerability due to insufficient handler call depth tracking
Summary: CVE-2026-56131 libexpat: libexpat: Use-after-free vulnerability due to insuff...
Keywords:
Status: NEW
Alias: CVE-2026-56131
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On: 2509709 2509708
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-06-19 05:01 UTC by OSIDB Bzimport
Modified: 2026-07-31 09:09 UTC (History)
5 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-06-19 05:01:24 UTC 
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).
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