Vulnerability 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.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Hardened Images | - |
| Redhat | Jboss Core Services | - |
| Redhat | Openshift Container Platform | 4.0 |
| Redhat | Enterprise Linux | 6.0 |
| Ibm | Vios | >= 4.1.0, < 4.1.1.30 |
| Ibm | Aix | >= 7.2.5, < 7.2.5.12 |
| Xmlsoft | Libxml2 | < 2.15.2 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2026:7519Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2026-0992Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2429975Issue TrackingThird Party Advisory
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/1019ExploitThird Party Advisory
FAQ
What is CVE-2026-0992?
CVE-2026-0992 is a vulnerability with a CVSS score of 2.9 (LOW). 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 down...
How severe is CVE-2026-0992?
CVE-2026-0992 has been rated LOW with a CVSS base score of 2.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-0992?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Hardened Images, Redhat Jboss Core Services, Redhat Openshift Container Platform, Redhat Enterprise Linux, Ibm Vios.