{"action":"Upgrade puma to 5.6.7 or later.","affected":[{"fixed":"5.6.7","introduced":"0"},{"fixed":"6.3.1","introduced":"6.0.0"}],"component":"puma","cve_ids":["CVE-2023-40175"],"ecosystem":"RubyGems","epss":0.00847,"exploited":false,"fixed_versions":["5.6.7","6.3.1"],"ghsa_id":"GHSA-68xg-gqqm-vgj8","id":"tcs_01M5KEH8QS46YTD9ZMJNJXKCY0","modified_at":"2026-09-10T03:49:57.566567193Z","published_at":"2023-08-18T21:50:05Z","references":["https://osv.dev/vulnerability/GHSA-68xg-gqqm-vgj8","https://github.com/puma/puma/security/advisories/GHSA-68xg-gqqm-vgj8","https://nvd.nist.gov/vuln/detail/CVE-2023-40175","https://github.com/puma/puma/commit/690155e7d644b80eeef0a6094f9826ee41f1080a","https://github.com/puma/puma/commit/7405a219801dcebc0ad6e0aa108d4319ca23f662","https://github.com/puma/puma/commit/ed0f2f94b56982c687452504b95d5f1fbbe3eed1","https://github.com/puma/puma","https://github.com/puma/puma/releases/tag/v5.6.7","https://github.com/puma/puma/releases/tag/v6.3.1","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2023-40175.yml"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-68xg-gqqm-vgj8","url":"https://osv.dev/vulnerability/GHSA-68xg-gqqm-vgj8"}],"summary":"Puma HTTP Request/Response Smuggling vulnerability"}