{"schema":"threatline.record/2","record":{"id":"CVE-2026-118177","aliases":[],"summary":"Calendar discovery accepted local file and remote network share locations","details":"When looking for calendars in a directory on a server, during account setup or when adding a new network calendar, Thunderbird accepted calendar locations pointing to other servers, local files or network shares. A malicious server, or a network attacker when the lookup used plain HTTP, could make Thunderbird subscribe to such a location. On Windows this could leak the user's NTLM credentials to an attacker-controlled host on every calendar refresh, and changes to the calendar could be written to the attacker's share or overwrite a local file. This vulnerability was fixed in Thunderbird 159 and Thunderbird 153.6.","categories":["Unclassified"],"product":"Thunderbird","vendor":"Mozilla","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-118177","source_modified_at":"2026-10-27T18:27:49.964Z","fetched_at":"2026-10-27T21:14:11.489891Z","product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"153.6","lessThanOrEqual":"153.*","versionType":"rpm"},{"status":"unaffected","version":"159","lessThanOrEqual":"*","versionType":"rpm"}],"defaultStatus":null}],"fixed_versions":[],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":null,"percentile":null,"score_date":null},"published_at":"2026-10-27T18:16:31.083Z","modified_at":"2026-10-27T18:27:49.964Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-118177","fetched_at":"2026-10-27T21:14:11.489891Z","source_modified_at":"2026-10-27T18:27:49.964Z"}],"sources":["CVE List"],"references":[{"source":"CVE List","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2080924"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-121/"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-122/"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-27T18:27:49.964Z","content_hash":"a47ed888b339839b2e87ead483efff479e5cd8e33600c7263064a19d0b0e2d1e"}}