{"schemaVersion":3,"id":"MGASA-2026-0014","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated thunderbird packages fix security vulnerabilities\n\nMitigation bypass in the DOM: Security component. (CVE-2026-0877)\nSandbox escape due to incorrect boundary conditions in the Graphics:\nCanvasWebGL component. (CVE-2026-0878)\nSandbox escape due to incorrect boundary conditions in the Graphics\ncomponent. (CVE-2026-0879)\nSandbox escape due to integer overflow in the Graphics component.\n(CVE-2026-0880)\nUse-after-free in the IPC component. (CVE-2026-0882)\nSpoofing issue in the Downloads Panel component. (CVE-2025-14327)\nInformation disclosure in the Networking component. (CVE-2026-0883)\nUse-after-free in the JavaScript Engine component. (CVE-2026-0884)\nUse-after-free in the JavaScript: GC component. (CVE-2026-0885)\nIncorrect boundary conditions in the Graphics component. (CVE-2026-0886)\nClickjacking issue, information disclosure in the PDF Viewer component.\n(CVE-2026-0887)\nSpoofing issue in the DOM: Copy & Paste and Drag & Drop component.\n(CVE-2026-0890)\nMemory safety bugs fixed in Firefox ESR 140.7, Thunderbird ESR 140.7,\nFirefox 147 and Thunderbird 147. (CVE-2026-0891)","dates":{"published":"2026-01-20T03:25:41.000Z","modified":"2026-04-16T04:42:34.094Z","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":"< 140.7.0-1.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 140.7.0-1.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":"< 140.7.0-1.mga9","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 140.7.0-1.mga9","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2026-0014.html","label":"advisories.mageia.org/MGASA-2026-0014.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=34993","label":"bugs.mageia.org/show_bug.cgi?id=34993","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://www.thunderbird.net/en-US/thunderbird/140.7.0esr/releasenotes/","label":"www.thunderbird.net/en-US/thunderbird/140.7.0esr/releasenotes/","hostname":"www.thunderbird.net","tags":["WEB"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2026-05/","label":"www.mozilla.org/en-US/security/advisories/mfsa2026-05/","hostname":"www.mozilla.org","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2025-14327","CVE-2026-0877","CVE-2026-0878","CVE-2026-0879","CVE-2026-0880","CVE-2026-0882","CVE-2026-0883","CVE-2026-0884","CVE-2026-0885","CVE-2026-0886","CVE-2026-0887","CVE-2026-0890","CVE-2026-0891"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-01-20T03:25:41.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T04:42:34.094Z","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":"2026-10-20T13:24:12.517Z","stale":false,"partial":false}}