{"identifier":"CVE-2026-6732","cve":{"id":"CVE-2026-6732","description":"A flaw was found in libxml2. This vulnerability occurs when the library processes a specially crafted XML Schema Definition (XSD) validated document that includes an internal entity reference. An attacker could exploit this by providing a malicious document, leading to a type confusion error that causes the application to crash. This results in a denial of service (DoS), making the affected system or application unavailable.","published":"2026-04-23T23:16:16.443000+00:00","modified":"2026-10-26T21:10:00.170000+00:00","status":"Analyzed","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_version":"3.1","affected":[{"criteria":"cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*","versionStartIncluding":"2.13.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"2.15.3"},{"criteria":"cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"4.1.1.30"},{"criteria":"cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""},{"criteria":"cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*","versionStartIncluding":"7.2.5","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"7.2.5.12"},{"criteria":"cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*","versionStartIncluding":"7.3.2","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"7.3.3.3"},{"criteria":"cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":""}],"weaknesses":["CWE-843"],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:11503","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-6732","source":"secalert@redhat.com","tags":["Third Party Advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2461300","source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097","source":"secalert@redhat.com","tags":["Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/411","source":"secalert@redhat.com","tags":["Issue Tracking","Third Party Advisory"]}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"secalert@redhat.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"ADJACENT_NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-24T10:53:00.163293Z","id":"CVE-2026-6732","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*","versionStartIncluding":"2.13.0","versionEndExcluding":"2.15.3","matchCriteriaId":"9E9D49F7-CC3F-4111-B3F4-470B40D4D75D"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*","matchCriteriaId":"87DEB507-5B64-47D7-9A50-3B87FD1E571F"},{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:*","matchCriteriaId":"9B453CF7-9AA6-4B94-A003-BF7AE0B82F53"},{"vulnerable":true,"criteria":"cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*","matchCriteriaId":"932D137F-528B-4526-9A89-CD59FA1AB0FE"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*","matchCriteriaId":"2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*","matchCriteriaId":"142AD0DD-4CF3-4D74-9442-459CE3347E3A"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*","matchCriteriaId":"F4CFF558-3C47-480D-A2F0-BABF26042943"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*","matchCriteriaId":"7F6FB57C-2BC7-487C-96DD-132683AEB35D"},{"vulnerable":true,"criteria":"cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*","matchCriteriaId":"D65C2163-CFC2-4ABB-8F4E-CB09CEBD006C"}]}]},{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ibm:vios:*:*:*:*:*:*:*:*","versionStartIncluding":"4.1.0","versionEndExcluding":"4.1.1.30","matchCriteriaId":"0965BF55-8E7F-4AF3-9F5A-153A7BA16636"},{"vulnerable":true,"criteria":"cpe:2.3:a:ibm:vios:4.1.2.0:*:*:*:*:*:*:*","matchCriteriaId":"0CAC7774-29F9-4BD9-B411-161C2D39D3FB"},{"vulnerable":true,"criteria":"cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*","versionStartIncluding":"7.2.5","versionEndExcluding":"7.2.5.12","matchCriteriaId":"BFCEA403-1DB8-48AE-A5C8-C65664B7D665"},{"vulnerable":true,"criteria":"cpe:2.3:o:ibm:aix:*:*:*:*:*:*:*:*","versionStartIncluding":"7.3.2","versionEndExcluding":"7.3.3.3","matchCriteriaId":"BAED23CE-9982-46C8-8B79-8838A8F2548D"},{"vulnerable":true,"criteria":"cpe:2.3:o:ibm:aix:7.3.4:*:*:*:*:*:*:*","matchCriteriaId":"DBAD6CAA-4E58-4401-987A-186EE9D98731"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:19:36.718411+00:00","exploited":false,"kev_stale":false,"products":["xmlsoft / libxml2","redhat / hardened images","redhat / jboss core services","redhat / openshift container platform"],"priority":{"label":"Assess exposure and vendor guidance","reasons":["No higher-priority signal is available in the current stored evidence."]},"epss":{"probability":0.00632,"percentile":0.50089,"date":"2026-10-27","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"access.redhat.com","source_url":"https://access.redhat.com/errata/RHSA-2026:11503","investigate_url":"https://investigate.aeglixmind.com/#access.redhat.com"},{"domain":"bugzilla.redhat.com","source_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2461300","investigate_url":"https://investigate.aeglixmind.com/#bugzilla.redhat.com"},{"domain":"gitlab.gnome.org","source_url":"https://gitlab.gnome.org/GNOME/libxml2/-/issues/1097","investigate_url":"https://investigate.aeglixmind.com/#gitlab.gnome.org"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-6732","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-6732","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-6732","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}