This page tracks the Alpine Linux fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-50219 →

ALPINE-CVE-2026-50219

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset fro...

Original description

The description as published by the source.

libexpat before 2.8.2 lacks handler call depth tracking for calls to XML_GetBuffer, XML_Parse, XML_ParseBuffer, XML_ParserFree, or XML_ParserReset from within handlers in cases of a policy violation. Thus, a use-after-free can occur,

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Alpine:v3.21 expat

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.2-r0"}]}]

Alpine:v3.22 expat

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.2-r0"}]}]

Alpine:v3.23 expat

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.2-r0"}]}]

Alpine:v3.24 expat

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.2-r0"}]}]

References

advisory security.alpinelinux.org