{"action":"Upgrade thunderbird to 1:140.13.0esr-2~deb13u1 or later.","affected":[{"fixed":"1:140.13.0esr-2~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:140.13.0esr-2~deb13u1"],"id":"tcs_01M5NQQ1WFBYD16JSWSW2GV0FD","modified_at":"2026-10-01T03:02:51.867883165Z","published_at":"2026-07-21T13:17:12.870Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-16377","https://security-tracker.debian.org/tracker/CVE-2026-16377"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-16377#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-16377"}],"summary":"Mitigation bypass in the PDF Viewer component. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13."}