{"action":"Upgrade thunderbird to 1:153.5.0esr-1 or later.","affected":[{"fixed":"1:153.5.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:153.5.0esr-1"],"id":"tcs_01M5NPXPJG9S053XMGYCWRW72R","modified_at":"2026-10-26T20:00:14.483553731Z","published_at":"2026-10-13T13:17:24.270Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-109737","https://security-tracker.debian.org/tracker/CVE-2026-109737"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-109737#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-109737"}],"summary":"Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5."}