{"action":"Upgrade firefox-esr to 91.2.0esr-1 or later.","affected":[{"fixed":"91.2.0esr-1","introduced":"0"}],"component":"firefox-esr","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["91.2.0esr-1"],"id":"tcs_01M5NFX0BDB5D2GWM38RYZRECX","modified_at":"2026-10-23T18:03:45.923840136Z","published_at":"2021-11-03T01:15:07.380Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-38496","https://security-tracker.debian.org/tracker/CVE-2021-38496"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-38496","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-38496"}],"summary":"During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting in memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird"}