{"id":"CVE-2026-0990","title":"A flaw was found in libxml2, an XML parsing library","summary":"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 cou…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-674"],"published":"2026-01-15","updated":"2026-06-29","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-0990","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:7519","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-0990","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2429959","label":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/issues/1018","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00896,"epssPercentile":0.58035,"ingestedAt":"2026-06-29T21:48:47.224Z","slug":"CVE-2026-0990","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}