CVE-2026-56406

A flaw was found in libexpat. An integer overflow vulnerability exists in the XML_ParseBuffer function due to a missing check. This flaw could allow an attacker to cause memory corruption, potentially leading to arbitrary code execution, information disclosure, or a denial of service.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.