CVE-2026-76957
Medium · 4.9CVSS
4.9
EPSS
0.1%
Published
Aug 20, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-19666 On a resolver configured to use ``dns64``, if an applicable answer from the authoritative… CWE-416
- CVE-2026-19662 An attacker may be able to cause a `named` resolver to abort. CWE-416
- CVE-2026-78227 NLnet Labs Unbound 1.22.0 up to and including 1.26.1, has a use-after-free vulnerability… CWE-416
- CVE-2026-80229 When performing transfers via libcurl’s multi interface, pooled TLS connections can… CWE-416
- CVE-2026-33630 c-ares is an asynchronous resolver library. CWE-416
- CVE-2026-59184 OpenEXR is the reference implementation and specification for the EXR image format… CWE-416
- CVE-2026-18299 GStreamer rtpsbcdepay Use-After-Free Remote Code Execution Vulnerability. CWE-416
- CVE-2026-19548 Multiple Use-After-Free vulnerabilities were found in the add_archive_element function in… CWE-416