{"action":"Upgrade nginx to 1.22.1-9+deb12u5 or later.","affected":[{"fixed":"1.22.1-9+deb12u5","introduced":"0"}],"component":"nginx","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["1.22.1-9+deb12u5"],"id":"tcs_01M5NRGY5KYW0JVYGTTH0W1PE6","modified_at":"2026-10-01T03:03:09.583212665Z","published_at":"2026-03-24T15:16:33.560Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-28753","https://security-tracker.debian.org/tracker/CVE-2026-28753"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-28753","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-28753"}],"summary":"NGINX Plus and NGINX Open Source have a vulnerability in the ngx_mail_smtp_module module due to the improper handling of CRLF sequences in DNS responses. This allows an attacker-controlled DNS server"}