{"schema_version":"1.7.5","id":"CVE-2021-23973","published":"2021-02-26T02:15:13.243Z","modified":"2026-04-16T04:36:06.001150500Z","related":["SUSE-SU-2021:0659-1","SUSE-SU-2021:0661-1","SUSE-SU-2021:0667-1","SUSE-SU-2021:0676-1","SUSE-SU-2021:14657-1","openSUSE-SU-2021:0373-1","openSUSE-SU-2021:0387-1","openSUSE-SU-2024:10600-1","openSUSE-SU-2024:10601-1","openSUSE-SU-2024:14572-1"],"details":"When trying to load a cross-origin resource in an audio/video context a decoding error may have resulted, and the content of that error may have revealed information about the resource. This vulnerability affects Firefox < 86, Thunderbird < 78.8, and Firefox ESR < 78.8.","affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23973.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"86.0"}]},{"events":[{"introduced":"0"},{"fixed":"78.8"}]},{"events":[{"introduced":"0"},{"fixed":"78.8"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}]}}],"references":[{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-09/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/03/msg00000.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202104-09"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202104-10"},{"type":"ADVISORY","url":"https://www.debian.org/security/2021/dsa-4866"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-07/"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-08/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1690976"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"}]}