{"id":"CVE-2026-103417","title":"Firefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the saved-login UI was open","summary":"Firefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the saved-login UI was open. Autofill was not bound to the originating page or rejected when its origin changed. This vulnerabilit…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","cwe":["CWE-346"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T13:17:13.330","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103417","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068171","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-105/","label":"security@mozilla.org"}],"tags":["nvd"],"ingestedAt":"2026-10-13T08:19:03.891Z","slug":"CVE-2026-103417","body":"## Overview\n\nFirefox for iOS could autofill saved credentials into a new page if cross-origin navigation occurred while the saved-login UI was open. Autofill was not bound to the originating page or rejected when its origin changed. This vulnerability was fixed in Firefox for iOS 157.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":219683,"id":"CVE-2026-103417","ts":1791898067554,"field":"cvss","old":null,"new":"5.5"},{"seq":219682,"id":"CVE-2026-103417","ts":1791898067554,"field":"severity","old":"none","new":"medium"}]}