{"schemaVersion":3,"id":"SUSE-SU-2026:3897-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Security update for MozillaThunderbird\n\nThis update for MozillaThunderbird fixes the following issue:\n\nUpdate to Mozilla Thunderbird 140.14.\n\n- MFSA 2026-79 (bsc#1274867)\n  * CVE-2026-74934: Site isolation issue in the Graphics: CanvasWebGL component\n  * CVE-2026-74935: Privilege escalation in the DOM: Networking component\n  * CVE-2026-74936: Use-after-free in the JavaScript: WebAssembly component\n  * CVE-2026-74939: Privilege escalation in the DOM: Navigation component\n  * CVE-2026-74940: Use-after-free in the Graphics: Text component\n  * CVE-2026-74941: Privilege escalation in the Graphics: CanvasWebGL component\n  * CVE-2026-74942: Privilege escalation in the Remote Settings Client component\n  * CVE-2026-74943: Use-after-free in the Graphics: ImageLib component\n  * CVE-2026-74944: Use-after-free in the DOM: Core & HTML component\n  * CVE-2026-74945: Information disclosure in the Graphics: Text component\n  * CVE-2026-74946: Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component\n  * CVE-2026-74948: Information disclosure in the Graphics component\n  * CVE-2026-74949: Privilege escalation due to use-after-free in the Graphics: Canvas2D component\n  * CVE-2026-74953: Privilege escalation in the Networking: Cookies component\n  * CVE-2026-74957: Mitigation bypass in the Safe Browsing component\n  * CVE-2026-74959: Mitigation bypass in the Storage: Cache API component\n  * CVE-2026-74960: Site isolation issue in the WebExtensions component\n  * CVE-2026-74962: Site isolation issue in the Networking: Cookies component\n  * CVE-2026-74963: Same-origin policy bypass in the Networking: Cookies component\n  * CVE-2026-74964: Integer overflow in the Graphics component\n  * CVE-2026-74965: Privilege escalation in the Shell Integration component\n  * CVE-2026-74967: Same-origin policy bypass in the Audio/Video: Playback component\n  * CVE-2026-74969: Use-after-free in the Layout: Text and Fonts component\n  * CVE-2026-74971: Information disclosure in the DOM: UI Events & Focus Handling component\n  * CVE-2026-74972: Information disclosure in the DOM: Push Subscriptions component\n  * CVE-2026-74973: Race condition, use-after-free in the Graphics component\n  * CVE-2026-74974: Same-origin policy bypass in the Graphics: ImageLib component\n  * CVE-2026-74976: JIT miscompilation in the JavaScript Engine: JIT component\n  * CVE-2026-74983: Mitigation bypass in the Data Loss Prevention component\n  * CVE-2026-74987: Internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154\n  * CVE-2026-74990: Internally found bugs fixed in Thunderbird ESR 140.14, Thunderbird ESR 153.1 and Thunderbird 154","dates":{"published":"2026-08-31T15:01:13.000Z","modified":"2026-09-10T18:23:20.621Z","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":"suse","product":"MozillaThunderbird&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7","name":"MozillaThunderbird","label":"MozillaThunderbird&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaThunderbird&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7","purlType":"rpm","versions":[{"text":"< 140.14.0-150200.8.283.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 140.14.0-150200.8.283.1","eol":null,"hubHref":null},{"vendor":"suse","product":"MozillaThunderbird&distro=SUSE Linux Enterprise Workstation Extension 15 SP7","name":"MozillaThunderbird","label":"MozillaThunderbird&distro=SUSE Linux Enterprise Workstation Extension 15 SP7","ecosystem":"SUSE Linux Enterprise","cpePart":null,"purl":"pkg:rpm/suse/MozillaThunderbird&distro=SUSE Linux Enterprise Workstation Extension 15 SP7","purlType":"rpm","versions":[{"text":"< 140.14.0-150200.8.283.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 140.14.0-150200.8.283.1","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.suse.com/support/update/announcement/2026/suse-su-20263897-1/","label":"www.suse.com/support/update/announcement/2026/suse-su-20263897-1/","hostname":"www.suse.com","tags":["Advisory"]},{"url":"https://bugzilla.suse.com/1274867","label":"bugzilla.suse.com/1274867","hostname":"bugzilla.suse.com","tags":["REPORT"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74934","label":"www.suse.com/security/cve/CVE-2026-74934","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74935","label":"www.suse.com/security/cve/CVE-2026-74935","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74936","label":"www.suse.com/security/cve/CVE-2026-74936","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74939","label":"www.suse.com/security/cve/CVE-2026-74939","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74940","label":"www.suse.com/security/cve/CVE-2026-74940","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74941","label":"www.suse.com/security/cve/CVE-2026-74941","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74942","label":"www.suse.com/security/cve/CVE-2026-74942","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74943","label":"www.suse.com/security/cve/CVE-2026-74943","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74944","label":"www.suse.com/security/cve/CVE-2026-74944","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74945","label":"www.suse.com/security/cve/CVE-2026-74945","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74946","label":"www.suse.com/security/cve/CVE-2026-74946","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74948","label":"www.suse.com/security/cve/CVE-2026-74948","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74949","label":"www.suse.com/security/cve/CVE-2026-74949","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74953","label":"www.suse.com/security/cve/CVE-2026-74953","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74957","label":"www.suse.com/security/cve/CVE-2026-74957","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74959","label":"www.suse.com/security/cve/CVE-2026-74959","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74960","label":"www.suse.com/security/cve/CVE-2026-74960","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74962","label":"www.suse.com/security/cve/CVE-2026-74962","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74963","label":"www.suse.com/security/cve/CVE-2026-74963","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74964","label":"www.suse.com/security/cve/CVE-2026-74964","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74965","label":"www.suse.com/security/cve/CVE-2026-74965","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74967","label":"www.suse.com/security/cve/CVE-2026-74967","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74969","label":"www.suse.com/security/cve/CVE-2026-74969","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74971","label":"www.suse.com/security/cve/CVE-2026-74971","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74972","label":"www.suse.com/security/cve/CVE-2026-74972","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74973","label":"www.suse.com/security/cve/CVE-2026-74973","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74974","label":"www.suse.com/security/cve/CVE-2026-74974","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74976","label":"www.suse.com/security/cve/CVE-2026-74976","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74983","label":"www.suse.com/security/cve/CVE-2026-74983","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74987","label":"www.suse.com/security/cve/CVE-2026-74987","hostname":"www.suse.com","tags":["WEB"]},{"url":"https://www.suse.com/security/cve/CVE-2026-74990","label":"www.suse.com/security/cve/CVE-2026-74990","hostname":"www.suse.com","tags":["WEB"]}],"lineage":{"upstream":["CVE-2026-74934","CVE-2026-74935","CVE-2026-74936","CVE-2026-74939","CVE-2026-74940","CVE-2026-74941","CVE-2026-74942","CVE-2026-74943","CVE-2026-74944","CVE-2026-74945","CVE-2026-74946","CVE-2026-74948","CVE-2026-74949","CVE-2026-74953","CVE-2026-74957","CVE-2026-74959","CVE-2026-74960","CVE-2026-74962","CVE-2026-74963","CVE-2026-74964","CVE-2026-74965","CVE-2026-74967","CVE-2026-74969","CVE-2026-74971","CVE-2026-74972","CVE-2026-74973","CVE-2026-74974","CVE-2026-74976","CVE-2026-74983","CVE-2026-74987","CVE-2026-74990"],"downstream":[],"duplicates":[],"related":["CVE-2026-74934","CVE-2026-74935","CVE-2026-74936","CVE-2026-74939","CVE-2026-74940","CVE-2026-74941","CVE-2026-74942","CVE-2026-74943","CVE-2026-74944","CVE-2026-74945","CVE-2026-74946","CVE-2026-74948","CVE-2026-74949","CVE-2026-74953","CVE-2026-74957","CVE-2026-74959","CVE-2026-74960","CVE-2026-74962","CVE-2026-74963","CVE-2026-74964","CVE-2026-74965","CVE-2026-74967","CVE-2026-74969","CVE-2026-74971","CVE-2026-74972","CVE-2026-74973","CVE-2026-74974","CVE-2026-74976","CVE-2026-74983","CVE-2026-74987","CVE-2026-74990"]},"timeline":[{"kind":"published","date":"2026-08-31T15:01:13.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-09-10T18:23:20.621Z","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":"2026-10-21T23:00:26.733Z","stale":false,"partial":false}}