{"id":"CVE-2026-76781","published":"2026-09-17T16:17:42.070","lastModified":"2026-09-21T20:17:32.207","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).","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-476"],"vendors":[],"products":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:57604","tags":[]},{"url":"https://access.redhat.com/security/cve/CVE-2026-76781","tags":[]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519776","tags":[]},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/commit/c6324894","tags":[]},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/442","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}