{"id":"CVE-2021-29974","details":"When network partitioning was enabled, e.g. as a result of Enhanced Tracking Protection settings, a TLS error page would allow the user to override an error on a domain which had specified HTTP Strict Transport Security (which implies that the error should not be override-able.) This issue did not affect the network connections, and they were correctly upgraded to HTTPS automatically. This vulnerability affects Firefox \u003c 90.","modified":"2026-05-04T08:37:43.337058Z","published":"2021-08-05T20:15:08.697Z","withdrawn":"2026-05-04T08:37:43.337058Z","related":["openSUSE-SU-2024:10600-1","openSUSE-SU-2024:14572-1"],"references":[{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202202-03"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-28/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1704843"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29974.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"90.0"}]}]}}],"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:L/A:N"}]}