CVE-2026-76781
MEDIUM
NVD
CVSS Score
5.5
Severity
MEDIUM
Published
Sep 17, 2026
Vendor
unknown
Description
A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing. This occurs when a `nextCatalog` element lacks its mandatory `catalog` attribute, leading to the application crashing and causing a Denial of Service (DoS).