{"action":"Upgrade thunderbird to 1:140.13.0esr-2~deb12u1 or later.","affected":[{"fixed":"1:140.13.0esr-2~deb12u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1:140.13.0esr-2~deb12u1"],"id":"tcs_01M5NQN3RSCBTAF7NW6169ZEDW","modified_at":"2026-10-25T09:47:31.095511962Z","published_at":"2026-07-22T20:16:48.383Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-14899","https://security-tracker.debian.org/tracker/CVE-2026-14899"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-14899","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-14899"}],"summary":"The code to parse MIME headers for display when forwarding a message (if the setting to view all headers was enabled) had an off-by-one error, allowing a single byte to be read from the memory after t"}