{"action":"Upgrade thunderbird to 1:78.10.0-1 or later.","affected":[{"fixed":"1:78.10.0-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:78.10.0-1"],"id":"tcs_01M5NFFGSXN5ZASNZ9F2C2H8C4","modified_at":"2026-10-23T18:03:25.445556459Z","published_at":"2021-06-24T14:15:09.320Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-23994","https://security-tracker.debian.org/tracker/CVE-2021-23994"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-23994#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-23994"}],"summary":"A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound write. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88."}