{"action":"Upgrade puma to 5.6.5-3+deb12u2 or later.","affected":[{"fixed":"5.6.5-3+deb12u2","introduced":"0"}],"component":"puma","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["5.6.5-3+deb12u2"],"id":"tcs_01M5NSK14997CRPP2G5YVFWEGT","modified_at":"2026-10-07T12:00:07.664437867Z","published_at":"2026-07-14T20:17:03.767Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-47737","https://security-tracker.debian.org/tracker/CVE-2026-47737"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-47737","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-47737"}],"summary":"Puma is a Ruby/Rack web server built for parallelism. From 5.5.0 until 7.2.1 and 8.0.2, Puma is vulnerable to source IP spoofing when set_remote_address proxy_protocol: :v1 is enabled and persistent c"}