PT-2026-46147 · Libexpat · Libexpat

Published 2026-06-04 · Updated 2026-06-04 · CVE-2026-50219

NVD

CVSS v3.1

4.9

Medium

Base vector

AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

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,

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2026-50219

Affected Products

Libexpat

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-50219 · Security Note
• https://github.com/libexpat/libexpat/pull/1246 · Note