{"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_01M5NPYBNA8N3TQBHSJKQ8QA6R","modified_at":"2026-10-26T20:00:15.073810869Z","published_at":"2026-10-13T13:17:28.507Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-109776","https://security-tracker.debian.org/tracker/CVE-2026-109776"],"severity":{"label":"medium","score":4.2},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-109776#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-109776"}],"summary":"Race condition in the XPCOM component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5."}