{"id":"CVE-2026-0989","title":"A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled","summary":"A flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly …","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-674"],"published":"2026-01-15","updated":"2026-06-29","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-0989","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:7519","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-0989","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2429933","label":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/issues/998","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00498,"epssPercentile":0.41703,"ingestedAt":"2026-06-29T21:48:47.222Z","slug":"CVE-2026-0989","body":"## Overview\n\nA flaw was identified in the RelaxNG parser of libxml2 related to how external schema inclusions are handled. The parser does not enforce a limit on inclusion depth when resolving nested <include> directives. Specially crafted or overly complex schemas can cause excessive recursion during parsing. This may lead to stack exhaustion and application crashes, creating a denial-of-service risk.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}