{"action":"Upgrade thunderbird to 1:140.14.0esr-1 or later.","affected":[{"fixed":"1:140.14.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:140.14.0esr-1"],"id":"tcs_01M5NVBV5EJN7C596FW3P7K4PN","modified_at":"2026-10-29T06:00:12.052365270Z","published_at":"2026-08-18T13:17:34.317Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-74969","https://security-tracker.debian.org/tracker/CVE-2026-74969"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-74969#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-74969"}],"summary":"Race condition, use-after-free in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunder"}