CVE-2026-0990 — Uncontrolled Recursion in Libxml2
Severity
5.9MEDIUMNVD
OSV4.8
EPSS
0.1%
top 82.56%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJan 15
Latest updateJan 22
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 applicatio…
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 2.2 | Impact: 3.6