{"schema":"threatline.record/2","record":{"id":"CVE-2026-109755","aliases":[],"summary":"Sandbox escape in the DOM: Content Processes component","details":"Sandbox escape in the DOM: Content Processes component. This vulnerability was fixed in Firefox 158 and Thunderbird 158.","categories":["Applications & CMS"],"product":"Firefox","vendor":"Mozilla","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109755","source_modified_at":"2026-10-15T19:55:51.874Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"158","lessThanOrEqual":"*","versionType":"rpm"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109755","source_modified_at":"2026-10-15T19:55:51.874Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"158","lessThanOrEqual":"*","versionType":"rpm"}],"defaultStatus":null}],"fixed_versions":[],"cvss":9.6,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00338,"percentile":0.26023,"score_date":"2026-10-23"},"published_at":"2026-10-13T12:29:30.078Z","modified_at":"2026-10-15T19:55:51.874Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109755","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-15T19:55:51.874Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109755","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068448"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-106/"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-109/"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-15T19:55:44.542082Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-15T19:55:51.874Z","content_hash":"a116a958fd386762cef8c8c8ed95799a8c297f5b1146b52e2debaba180046a24"}}