CVE-2026-0990 — Libxml2: libxml2: denial of service via uncontrolled recursion in xml catalog processing
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 dele…
Published: 2026-01-15 · CVSS: 5.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7