CVE-2026-76781
Published:September 17, 2026
Updated:September 22, 2026
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).
Affected Packages
https://gitlab.gnome.org/GNOME/libxml2.git (SCM_GIT):
Affected version(s) >=v2.15.2 <v2.15.4Fix Suggestion:
Update to version v2.15.4Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
NULL Pointer Dereference
EPSS
Base Score:
0.16