{"action":"Upgrade nginx to 1.26.3-3+deb13u1 or later.","affected":[{"fixed":"1.26.3-3+deb13u1","introduced":"0"}],"component":"nginx","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.26.3-3+deb13u1"],"id":"tcs_01M5NP17T3RW2012X5WTZK7DTS","modified_at":"2026-09-01T20:05:53.868844782Z","published_at":"2025-08-13T15:15:37.657Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2025-53859","https://security-tracker.debian.org/tracker/CVE-2025-53859"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2025-53859#Debian:13/nginx","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2025-53859"}],"summary":"NGINX Open Source and NGINX Plus have a vulnerability in the ngx_mail_smtp_module that might allow an unauthenticated attacker to over-read NGINX SMTP authentication process memory; as a result, the s"}