{"id":"CVE-2026-76781","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-76781","generatedAt":"2026-10-28T03:38:26.533Z","title":"A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing.","description":"A flaw was found in libxml2. A local user or an attacker providing a specially crafted XML catalog can trigger a NULL pointer dereference during XML catalog parsing. This occurs when a `nextCatalog` element lacks its mandatory `catalog` attribute, leading to the application crashing and causing a Denial of Service (DoS).","published":"2026-09-17T16:17:42.000Z","lastModified":"2026-09-24T12:17:13.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-476"],"affected":[],"epss":{"score":0.00167,"percentile":0.05884,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:57604","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-76781","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519776","source":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/commit/c6324894","source":"secalert@redhat.com"},{"url":"https://gitlab.gnome.org/GNOME/libxml2/-/merge_requests/442","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-76781","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}