{"action":"Upgrade thunderbird to 1:128.10.1esr-1 or later.","affected":[{"fixed":"1:128.10.1esr-1","introduced":"0"}],"component":"thunderbird","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["1:128.10.1esr-1"],"id":"tcs_01M5NNMVC603XKHGTSWTESKRDP","modified_at":"2026-09-01T20:05:50.010760060Z","published_at":"2025-05-14T17:15:48.470Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-3875","https://security-tracker.debian.org/tracker/CVE-2025-3875"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-3875#Debian:14/thunderbird","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-3875"}],"summary":"Thunderbird parses addresses in a way that can allow sender spoofing in case the server allows an invalid From address to be used. For example, if the From header contains an (invalid) value \"Spoofed"}