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).
History

Mon, 21 Sep 2026 20:15:00 +0000

Type Values Removed Values Added
References

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat hardened Images
Redhat libxml2
Redhat openshift Container Platform
Vendors & Products Redhat hardened Images
Redhat libxml2
Redhat openshift Container Platform

Fri, 18 Sep 2026 05:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
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).
Title Libxml2: libxml2: null pointer dereference parsing nextcatalog without catalog attribute
First Time appeared Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
Weaknesses CWE-476
CPEs cpe:/a:redhat:hummingbird:1
cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat hummingbird
Redhat openshift
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published: 2026-09-17T15:11:29.256Z

Updated: 2026-09-24T11:57:00.431Z

Reserved: 2026-08-19T17:15:10.735Z

Link: CVE-2026-76781

cve-icon Vulnrichment

Updated: 2026-09-17T17:10:18.323Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-17T16:17:42.070

Modified: 2026-09-24T12:17:12.793

Link: CVE-2026-76781

cve-icon Redhat

No data.