VULNERABILITY INTELLIGENCE

CVE-2026-76957

CVSS score7.8 HIGH

EPSS probability0.18%

CISA KEVNot currently listed

Published2026-08-20

Last modified2026-09-08

Description

libexpat before 2.8.2 does not consider XML_TOK_DATA_CHARS in doCdataSection and thus lacks handler call depth tracking for various calls from within handlers in cases of a policy violation. Thus, a use-after-free can occur. NOTE: this issue exists because of an incomplete fix for CVE-2026-50219.