CVE-2026-76781

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).

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
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

Configurations

No configuration.

History

21 Sep 2026, 20:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:57604 -

17 Sep 2026, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 16:17

Updated : 2026-09-24 12:17

NVD link : CVE-2026-76781

Mitre link : CVE-2026-76781

CVE.ORG link : CVE-2026-76781

JSON object : View

Products Affected

No product.

CWE

CWE-476

NULL Pointer Dereference

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