{"schemaVersion":3,"id":"MGASA-2026-0164","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated thunderbird(-l10n) packages fix security vulnerabilities\n\nThe updated packages fix security vulnerabilities:\nIncorrect boundary conditions in the Audio/Video: Web Codecs component.\n(CVE-2026-8946)\nIncorrect boundary conditions in the JavaScript Engine: JIT component.\n(CVE-2026-8388)\nUse-after-free in the DOM: Bindings (WebIDL) component. (CVE-2026-8947)\nOther issue in the JavaScript Engine component. (CVE-2026-8391)\nSandbox escape in the Profile Backup component. (CVE-2026-8401)\nSame-origin policy bypass in the Networking: HTTP component.\n(CVE-2026-8950)\nSandbox escape due to use-after-free in the Disability Access APIs\ncomponent. (CVE-2026-8953)\nIncorrect boundary conditions, integer overflow in the Audio/Video\ncomponent. (CVE-2026-8954)\nPrivilege escalation in the DOM: Workers component. (CVE-2026-8955)\nInteger overflow in the Networking: JAR component. (CVE-2026-8956)\nPrivilege escalation in the Enterprise Policies component.\n(CVE-2026-8957)\nInformation disclosure, sandbox escape in the Security: Process\nSandboxing component. (CVE-2026-8958)\nSpoofing issue in the Form Autofill component. (CVE-2026-8961)\nMitigation bypass in the DOM: Security component. (CVE-2026-8962)\nDenial-of-service due to invalid pointer in the Audio/Video: Web Codecs\ncomponent. (CVE-2026-8968)\nPrivilege escalation in the Security component. (CVE-2026-8970)\nMemory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151.\n(CVE-2026-8974)\nMemory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151.\n(CVE-2026-8975)","dates":{"published":"2026-05-29T05:12:50.000Z","modified":"2026-05-29T05:15:04.539Z","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":"mageia","product":"thunderbird","name":"thunderbird","label":"thunderbird","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/thunderbird","purlType":"rpm","versions":[{"text":"< 140.11.0-1.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 140.11.0-1.mga9","eol":null,"hubHref":null},{"vendor":"mageia","product":"thunderbird-l10n","name":"thunderbird-l10n","label":"thunderbird-l10n","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/thunderbird-l10n","purlType":"rpm","versions":[{"text":"< 140.11.0-1.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 140.11.0-1.mga9","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0164.html","label":"advisories.mageia.org/MGASA-2026-0164.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=35560","label":"bugs.mageia.org/show_bug.cgi?id=35560","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://www.thunderbird.net/en-US/thunderbird/140.11.0esr/releasenotes/","label":"www.thunderbird.net/en-US/thunderbird/140.11.0esr/releasenotes/","hostname":"www.thunderbird.net","tags":["WEB"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-51/","label":"www.mozilla.org/en-US/security/advisories/mfsa2026-51/","hostname":"www.mozilla.org","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2026-8388","CVE-2026-8391","CVE-2026-8401","CVE-2026-8946","CVE-2026-8947","CVE-2026-8950","CVE-2026-8953","CVE-2026-8954","CVE-2026-8955","CVE-2026-8956","CVE-2026-8957","CVE-2026-8958","CVE-2026-8961","CVE-2026-8962","CVE-2026-8968","CVE-2026-8970","CVE-2026-8974","CVE-2026-8975"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-05-29T05:12:50.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-05-29T05:15:04.539Z","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":"2026-10-19T20:43:17.299Z","stale":false,"partial":false}}