{"schemaVersion":3,"id":"USN-8023-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libxmltok vulnerabilities\n\nIt was discovered that Expat, contained within the xmltok library, incorrectly\nhandled the initialization of parsers for external entities. An attacker could\npossibly use this issue to cause a denial of service. (CVE-2026-24515)\n\nIt was discovered that Expat, contained within the xmltok library, incorrectly\nhandled integer calculations when allocating memory for XML tags. An attacker\ncould possibly use this issue to cause a denial of service or execute arbitrary\ncode. (CVE-2026-25210)","dates":{"published":"2026-02-11T10:29:21.000Z","modified":"2026-06-25T13:32:31.648Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"libxmltok","name":"libxmltok","label":"libxmltok","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/libxmltok","purlType":"deb","versions":[{"text":"< 1.2-3ubuntu0.16.04.1~esm5","noFixRecorded":false,"fixedIn":null},{"text":"< 1.2-4ubuntu0.18.04.1~esm6","noFixRecorded":false,"fixedIn":null},{"text":"< 1.2-4ubuntu0.20.04.1~esm6","noFixRecorded":false,"fixedIn":null},{"text":"< 1.2-4ubuntu0.22.04.1~esm6","noFixRecorded":false,"fixedIn":null},{"text":"< 1.2-4.1ubuntu2.24.0.4.1+esm4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.2-3ubuntu0.16.04.1~esm5 | < 1.2-4ubuntu0.18.04.1~esm6 | < 1.2-4ubuntu0.20.04.1~esm6 | < 1.2-4ubuntu0.22.04.1~esm6 | < 1.2-4.1ubuntu2.24.0.4.1+esm4","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8023-1","label":"ubuntu.com/security/notices/USN-8023-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-24515","label":"ubuntu.com/security/CVE-2026-24515","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-25210","label":"ubuntu.com/security/CVE-2026-25210","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-24515","CVE-2026-25210"]},"timeline":[{"kind":"published","date":"2026-02-11T10:29:21.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-25T13:32:31.648Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T06:34:36.723Z","stale":false,"partial":false}}