VULNERABILITY INTELLIGENCE

CVE-2026-0990

CVSS score5.9 MEDIUM
EPSS probability0.95%
CISA KEVNot currently listed
Published2026-01-15
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

A flaw was found in libxml2, an XML parsing library. This uncontrolled recursion vulnerability occurs in the xmlCatalogXMLResolveURI function when an XML catalog contains a delegate URI entry that references itself. A remote attacker could exploit this configuration-dependent issue by providing a specially crafted XML catalog, leading to infinite recursion and call stack exhaustion. This ultimately results in a segmentation fault, causing a Denial of Service (DoS) by crashing affected applications.

Weakness classification

  • secalert@redhat.com: CWE-674

Primary references