{"action":"Upgrade thunderbird to 1:153.6.0esr-1~deb13u1 or later.","affected":[{"fixed":"1:153.6.0esr-1~deb13u1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:153.6.0esr-1~deb13u1"],"id":"tcs_01M5ZT5H4YMKY9602T0K5HA8KH","modified_at":"2026-11-05T10:00:40.730578308Z","published_at":"2026-10-27T14:16:46.640Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-117912","https://security-tracker.debian.org/tracker/CVE-2026-117912"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-117912#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-117912"}],"summary":"Same-origin policy bypass in the CSS Parsing and Computation component. This vulnerability was fixed in Firefox 159, Firefox ESR 115.44, Firefox ESR 153.6, Thunderbird 159, and Thunderbird 153.6."}