{"action":"Upgrade thunderbird to 1:91.4.0-1 or later.","affected":[{"fixed":"1:91.4.0-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:91.4.0-1"],"id":"tcs_01M5NG1GHMBW7Y6A4RGG1G7WKX","modified_at":"2026-10-23T18:04:16.513639561Z","published_at":"2021-12-08T22:15:09.210Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-43528","https://security-tracker.debian.org/tracker/CVE-2021-43528"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-43528#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-43528"}],"summary":"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 stepp"}