CVE-2026-76781

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).

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Produits concernés

• Red Hat Hardened Images
• Red Hat Enterprise Linux 10
• Red Hat Enterprise Linux 6
• Red Hat Enterprise Linux 7
• Red Hat Enterprise Linux 8
• Red Hat Enterprise Linux 9
• Red Hat OpenShift Container Platform 4

Scores CVSS

Faiblesses (CWE)

• CWE-476

Références

• https://access.redhat.com/errata/RHSA-2026:57604
• https://access.redhat.com/security/cve/CVE-2026-76781
• https://bugzilla.redhat.com/show_bug.cgi?id=2519776
• https://gitlab.gnome.org/GNOME/libxml2/-/commit/c6324894
• https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/442

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories