{"schemaVersion":3,"id":"MGASA-2026-0492","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated thunderbird packages fix security vulnerabilities\n\nHeap buffer overflow opening large email. (CVE-2026-103500)\nIncorrect boundary conditions in the Audio/Video: Playback component.\n(CVE-2026-100756)\nUse-after-free in the Widget component. (CVE-2026-100757)\nSandbox escape in the DOM: Navigation component. (CVE-2026-100758)\nUninitialized memory in the Storage: Quota Manager component.\n(CVE-2026-100759)\nSandbox escape in the Security: Process Sandboxing component.\n(CVE-2026-100760)\nSandbox escape due to use-after-free in the DOM: Content Processes\ncomponent. (CVE-2026-100762)\nUse-after-free in the JavaScript: WebAssembly component.\n(CVE-2026-100765)\nInformation disclosure in the Networking: JAR component.\n(CVE-2026-100766)\nUse-after-free in the Networking: Cache component. (CVE-2026-100767)\nUse-after-free in the JavaScript: WebAssembly component.\n(CVE-2026-100769)\nSandbox escape due to use-after-free in the DOM: Content Processes\ncomponent. (CVE-2026-100770)\nUndefined behavior in the DOM: Streams component. (CVE-2026-100771)\nUse-after-free in the DOM: Core & HTML component. (CVE-2026-100772)\nUse-after-free in the Storage: IndexedDB component. (CVE-2026-100773)\nUse-after-free in the DOM: Core & HTML component. (CVE-2026-100774)\nSandbox escape in the Graphics component. (CVE-2026-100775)\nUse-after-free in the JavaScript: WebAssembly component.\n(CVE-2026-100776)\nUse-after-free in the Graphics: Canvas2D component. (CVE-2026-100777)\nSandbox escape due to use-after-free in the DOM: Core & HTML component.\n(CVE-2026-100778)\nUse-after-free in the XSLT component. (CVE-2026-100779)\nUse-after-free in the DOM: Core & HTML component. (CVE-2026-100780)\nSandbox escape due to incorrect boundary conditions in the Graphics:\nWebRender component. (CVE-2026-100781)\nPrivilege escalation due to incorrect boundary conditions in the\nGraphics component. (CVE-2026-100782)\nUninitialized memory in the Audio/Video component. (CVE-2026-100783)\nUse-after-free in the Layout: Text and Fonts component.\n(CVE-2026-100784)\nUse-after-free in the DOM: Core & HTML component. (CVE-2026-100785)\nSandbox escape due to use-after-free in the Graphics component.\n(CVE-2026-100786)\nSandbox escape in the XUL component. (CVE-2026-100787)\nInvalid pointer in the JavaScript: WebAssembly component.\n(CVE-2026-100788)\nUse-after-free in the Graphics: Canvas2D component. (CVE-2026-100789)\nUse-after-free in the XSLT component. (CVE-2026-100790)\nUse-after-free in the DOM: Core & HTML component. (CVE-2026-100791)\nUse-after-free in the Graphics: Canvas2D component. (CVE-2026-100832)\nJIT miscompilation in the JavaScript: WebAssembly component.\n(CVE-2026-100792)\nSandbox escape due to incorrect boundary conditions in the\nInternationalization component. (CVE-2026-100794)\nInformation disclosure in the Networking component. (CVE-2026-96869)\nPrivilege escalation due to use-after-free in the Graphics: WebRender\ncomponent. (CVE-2026-100797)\nCryptography misuse in Storage: Quota Manager component.\n(CVE-2026-100798)\nSandbox escape due to use-after-free in the Disability Access APIs\ncomponent. (CVE-2026-100800)\nPrivilege escalation in the DLL Services component. (CVE-2026-100801)\nSame-origin policy bypass in the WebExtensions component.\n(CVE-2026-100803)\nUninitialized memory in the Graphics: WebGPU component.\n(CVE-2026-100806)\nPrivilege escalation in the DOM: Service Workers component.\n(CVE-2026-100807)\nMitigation bypass in the DOM: Service Workers component.\n(CVE-2026-100808)\nSame-origin policy bypass in the DevTools component. (CVE-2026-100809)\nSandbox escape due to use-after-free in the DOM: Core & HTML component.\n(CVE-2026-100811)\nDenial-of-service in the Graphics component. (CVE-2026-100812)\nIncorrect boundary conditions in the JavaScript Engine: JIT component.\n(CVE-2026-100814)\nUse-after-free in the CSS Parsing and Computation component.\n(CVE-2026-100815)\nSite isolation issue in the DOM: Networking component. (CVE-2026-100816)\nSandbox escape due to use-after-free in the Widget: Gtk component.\n(CVE-2026-100818)\nSandbox escape due to incorrect boundary conditions in the XPCOM\ncomponent. (CVE-2026-100819)\nPrivilege escalation in the Address Bar component. (CVE-2026-100820)\nSite isolation issue in the Panning and Zooming component.\n(CVE-2026-100821)\nSpoofing issue in the Networking: HTTP component. (CVE-2026-100822)\nPrivilege escalation in the Places component. (CVE-2026-100824)\nUse-after-free in the JavaScript Engine: JIT component.\n(CVE-2026-100825)\nDenial-of-service in the Storage: StorageManager component.\n(CVE-2026-100826)\nMitigation bypass in the Bookmarks & History component.\n(CVE-2026-100828)\nMitigation bypass in the DOM: Security component. (CVE-2026-100829)\nMitigation bypass in the DOM: Navigation component. (CVE-2026-100830)\nUse-after-free in the DOM: UI Events & Focus Handling component.\n(CVE-2026-100831)","dates":{"published":"2026-10-12T18:47:12.000Z","modified":"2026-10-12T19:13:24.382Z","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":"< 153.4.0-3.mga10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 153.4.0-3.mga10","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":"< 153.4.0-1.mga10","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 153.4.0-1.mga10","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0492.html","label":"advisories.mageia.org/MGASA-2026-0492.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=36416","label":"bugs.mageia.org/show_bug.cgi?id=36416","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://www.thunderbird.net/en-US/thunderbird/153.4.0esr/releasenotes/","label":"www.thunderbird.net/en-US/thunderbird/153.4.0esr/releasenotes/","hostname":"www.thunderbird.net","tags":["WEB"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-103/","label":"www.mozilla.org/en-US/security/advisories/mfsa2026-103/","hostname":"www.mozilla.org","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2026-100756","CVE-2026-100757","CVE-2026-100758","CVE-2026-100759","CVE-2026-100760","CVE-2026-100762","CVE-2026-100765","CVE-2026-100766","CVE-2026-100767","CVE-2026-100769","CVE-2026-100770","CVE-2026-100771","CVE-2026-100772","CVE-2026-100773","CVE-2026-100774","CVE-2026-100775","CVE-2026-100776","CVE-2026-100777","CVE-2026-100778","CVE-2026-100779","CVE-2026-100780","CVE-2026-100781","CVE-2026-100782","CVE-2026-100783","CVE-2026-100784","CVE-2026-100785","CVE-2026-100786","CVE-2026-100787","CVE-2026-100788","CVE-2026-100789","CVE-2026-100790","CVE-2026-100791","CVE-2026-100792","CVE-2026-100794","CVE-2026-100797","CVE-2026-100798","CVE-2026-100800","CVE-2026-100801","CVE-2026-100803","CVE-2026-100806","CVE-2026-100807","CVE-2026-100808","CVE-2026-100809","CVE-2026-100811","CVE-2026-100812","CVE-2026-100814","CVE-2026-100815","CVE-2026-100816","CVE-2026-100818","CVE-2026-100819","CVE-2026-100820","CVE-2026-100821","CVE-2026-100822","CVE-2026-100824","CVE-2026-100825","CVE-2026-100826","CVE-2026-100828","CVE-2026-100829","CVE-2026-100830","CVE-2026-100831","CVE-2026-100832","CVE-2026-103500","CVE-2026-96869"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-12T18:47:12.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-12T19:13:24.382Z","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":"2026-10-20T13:23:49.349Z","stale":false,"partial":false}}