CVE-2026-56412
MEDIUM
NVD
CVSS Score
4.9
Severity
MEDIUM
Published
Jun 21, 2026
Vendor
unknown
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.