CVE-2026-0992
Published: January 16, 2026Last modified: January 20, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 2.9 |
| Attack Vector | LOCAL |
| Attack complexity | HIGH |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | LOW |
| Vector | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libxml2 | Fixed (2.10.4-r7) |
| 25 LTS | libxml2 | Fixed (2.13.9-r1) | |
| Stream | libxml2 | Fixed (2.13.9-r1) | |
| Hardened Containers | 23 LTS | libxml2 | Fixed (2.10.4-r7) |
| 25 LTS | libxml2 | Fixed (2.13.9-r1) | |
| Stream | libxml2 | Fixed (2.13.9-r1) |