CVE-2026-56412_CVE-2026-56412

4.9 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-56412

Source mitre

Published Jun 21, 2026 at 15:58

Affected Product

Vendor libexpat project

Product libexpat

Affected Versions libexpat project libexpat 0

CWE Classification

CWE-416

References

github.com /libexpat/libexpat/pull/1278

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    "published": "2026-06-21T15:58:59.347Z",
    "modified": "2026-06-21T15:58:59.347Z",
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