CVEvulnerability
CVE-2026-56412
5.9 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-06-21
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 4.9 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- CVSS 3.1 ([email protected])
- 5.9 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-416
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.
Affected configurations
• libexpat project libexpat (< 2.8.2)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://github.com/libexpat/libexpat/pull/1278 Patch, Issue Tracking