{"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_01M5NPXZ7DXCP3FD5GRYV12SBM","modified_at":"2026-10-21T06:05:47.459998536Z","published_at":"2026-10-13T13:17:26.207Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-109753","https://security-tracker.debian.org/tracker/CVE-2026-109753"],"severity":{"label":"high","score":8.1},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-109753#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-109753"}],"summary":"Incorrect boundary conditions in the Layout component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5."}