CVE-2026-76781

Published: Sep 17, 2026Modified: Sep 24, 2026

5.5

Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Exploitability: 1.8 / Impact: 3.6

Source: secalert@redhat.com (Secondary)

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).

Related CWEs

CWE-476

NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

References (5)

https://access.redhat.com/errata/RHSA-2026:57604

Source: secalert@redhat.com

https://access.redhat.com/security/cve/CVE-2026-76781

Source: secalert@redhat.com

https://bugzilla.redhat.com/show_bug.cgi?id=2519776

Source: secalert@redhat.com

https://gitlab.gnome.org/GNOME/libxml2/-/commit/c6324894

Source: secalert@redhat.com

https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/442

Source: secalert@redhat.com

Timeline

No history available yet.