A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

History

Fri, 16 Jan 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Low


Thu, 15 Jan 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Thu, 15 Jan 2026 14:30:00 +0000

Type Values Removed Values Added
Description A flaw was found in the libxml2 library. This uncontrolled resource consumption vulnerability occurs when processing XML catalogs that contain repeated <nextCatalog> elements pointing to the same downstream catalog. A remote attacker can exploit this by supplying crafted catalogs, causing the parser to redundantly traverse catalog chains. This leads to excessive CPU consumption and degrades application availability, resulting in a denial-of-service condition.
Title Libxml2: libxml2: denial of service via crafted xml catalogs
First Time appeared Redhat
Redhat enterprise Linux
Redhat jboss Core Services
Redhat openshift
Weaknesses CWE-400
CPEs cpe:/a:redhat:jboss_core_services: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 jboss Core Services
Redhat openshift
References
Metrics cvssV3_1

{'score': 2.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-01-15T16:39:47.982Z

Reserved: 2026-01-15T13:34:08.872Z

Link: CVE-2026-0992

cve-icon Vulnrichment

Updated: 2026-01-15T16:39:43.390Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-15T15:15:52.657

Modified: 2026-01-16T15:55:33.063

Link: CVE-2026-0992

cve-icon Redhat

Severity : Low

Publid Date: 2026-01-15T00:00:00Z

Links: CVE-2026-0992 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses