CVE search · CVE-2026-76957
CVE-2026-76957
high 7.8
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.
Details
- Status
- Modified
- Published
- Last changed
- Source
- cve@mitre.org
- Weakness
- CWE-416
Severity
| Version | Score | Vector | Source |
|---|---|---|---|
| CVSS 3.1 | medium 4.9 | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
cve@mitre.orgSecondary |
| CVSS 3.1 | high 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
nvd@nist.govPrimary |
Affected products
Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.
- libexpat_project · libexpat
References
- https://github.com/libexpat/libexpat/pull/1322Issue TrackingPatchVendor Advisory
- https://github.com/libexpat/libexpat/pull/1329Issue TrackingPatch
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html