SEPTEMBER 17, 2026
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Case File

CVE-2026-76957

MEDIUM · CVSS 4.9 EPSS 0.11% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-20 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The vulnerability in libexpat versions prior to 2.8.4 arises from inadequate tracking of handler call depth when using custom encoding callbacks, potentially leading to a use-after-free condition. This flaw could allow an attacker to exploit memory management issues, resulting in application crashes or arbitrary code execution. Developers and organizations utilizing libexpat for XML parsing should prioritize patching to mitigate the associated risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-76957
Severity
MEDIUM
CVSS
4.9
EPSS
0.11%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)