{"action":"Upgrade mutt to 1.5.20-1 or later.","affected":[{"fixed":"1.5.20-1","introduced":"0"}],"component":"mutt","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.5.20-1"],"id":"tcs_01M5N99ND5D607NFDM19PFVQ7M","modified_at":"2026-10-23T17:47:29.544220731Z","published_at":"2009-06-16T21:00:00.343Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2009-1390","https://security-tracker.debian.org/tracker/CVE-2009-1390"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2009-1390#Debian:13/mutt","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2009-1390"}],"summary":"Mutt 1.5.19, when linked against (1) OpenSSL (mutt_ssl.c) or (2) GnuTLS (mutt_ssl_gnutls.c), allows connections when only one TLS certificate in the chain is accepted instead of verifying the entire c"}