{"id":"CVE-2023-4053","details":"A website could have obscured the full screen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox \u003c 116, Firefox ESR \u003c 115.2, and Thunderbird \u003c 115.2.","modified":"2026-04-16T00:00:47.811809147Z","published":"2023-08-01T15:15:10.267Z","related":["ALSA-2023:4952","ALSA-2023:4954","ALSA-2023:4955","ALSA-2023:4958","SUSE-SU-2023:3519-1","SUSE-SU-2023:3559-1","SUSE-SU-2023:3562-1","SUSE-SU-2023:3664-1","openSUSE-SU-2024:13124-1","openSUSE-SU-2024:13197-1","openSUSE-SU-2024:13202-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-29/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-36/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2023-38/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1839079"}],"affected":[{"database_specific":{"unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"116.0"}]}],"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-4053.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:N/I:H/A:N"}]}