CVEvulnerability
CVE-2026-76957
7.8 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-20
- Last modified
- 2026-09-08
- 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])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416
Description
libexpat before 2.8.4 lacks handler call depth tracking with custom encoding callbacks. Thus, a use-after-free can occur. NOTE: this is similar to CVE-2026-50219, CVE-2026-56131 and CVE-2026-56412.
Affected configurations
• libexpat project libexpat (< 2.8.4)
Related
Weakness · CWE (1)
- CWE-416 Use After Free weakness
References
- https://github.com/libexpat/libexpat/pull/1322 Issue Tracking, Patch, Vendor Advisory
- https://github.com/libexpat/libexpat/pull/1329 Issue Tracking, Patch