CVE-2026-56412

MEDIUM CVSS 4.9 View on NVD ↗

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.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

References

https://github.com/libexpat/libexpat/pull/1278

Published: Jun 21, 2026 17:16 UTC Modified: Jun 21, 2026 17:16 UTC