{"action":"Upgrade puma to 5.5.2-1 or later.","affected":[{"fixed":"5.5.2-1","introduced":"0"}],"component":"puma","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["5.5.2-1"],"id":"tcs_01M5NFZYDCKGX03TY6VSDXGY02","modified_at":"2026-10-23T18:03:38.467314512Z","published_at":"2021-10-12T16:15:07.630Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-41136","https://security-tracker.debian.org/tracker/CVE-2021-41136"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-41136#Debian:14/puma","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-41136"}],"summary":"Puma is a HTTP 1.1 server for Ruby/Rack applications. Prior to versions 5.5.1 and 4.3.9, using `puma` with a proxy which forwards HTTP header values which contain the LF character could allow HTTP req"}