{"id":"CVE-2021-43528","details":"Thunderbird unexpectedly enabled JavaScript in the composition area. The JavaScript execution context was limited to this area and did not receive chrome-level privileges, but could be used as a stepping stone to further an attack with other vulnerabilities. This vulnerability affects Thunderbird \u003c 91.4.0.","modified":"2026-03-13T05:13:12.376229Z","published":"2021-12-08T22:15:09.210Z","related":["ALSA-2021:5045","MGASA-2021-0554","SUSE-SU-2021:4150-1","openSUSE-SU-2021:1635-1","openSUSE-SU-2021:4150-1","openSUSE-SU-2024:11670-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202208-14"},{"type":"ADVISORY","url":"https://www.mozilla.org/security/advisories/mfsa2021-54/"},{"type":"REPORT","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1742579"},{"type":"REPORT","url":"https://www.debian.org/security/2022/dsa-5034"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-43528.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"91.4.0"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"11.0"}]}]}}],"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:H/A:N"}]}