{"id":"CVE-2025-11720","details":"The Firefox and Firefox Focus UI for the Android custom tab feature only showed the \"site\" that was loaded, not the full hostname. User supplied content hosted on a subdomain of a site could have been used to fool a user into thinking it was content from a different subdomain of that site. This vulnerability affects Firefox \u003c 144.","modified":"2026-03-23T05:06:48.842141Z","published":"2025-10-14T13:15:38.400Z","related":["openSUSE-SU-2025:15645-1"],"references":[{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2025-81/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1979534"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1984370"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"144.0"}]}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-11720.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N"}]}