{"action":"Upgrade thunderbird to 1:128.11.0esr-1 or later.","affected":[{"fixed":"1:128.11.0esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:128.11.0esr-1"],"id":"tcs_01M5NNZAXQ118RWMZPYPNN51H3","modified_at":"2026-10-01T08:47:35.340920483Z","published_at":"2025-05-17T22:15:19.563Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-4918","https://security-tracker.debian.org/tracker/CVE-2025-4918"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-4918#Debian:13/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-4918"}],"summary":"An attacker was able to perform an out-of-bounds read or write on a JavaScript `Promise` object. This vulnerability was fixed in Firefox 138.0.4, Firefox ESR 128.10.1, Firefox ESR 115.23.1, Thunderbir"}