{"action":"Upgrade puma to 5.6.8 or later.","affected":[{"fixed":"6.4.2","introduced":"6.0.0"},{"fixed":"5.6.8","introduced":"0"}],"component":"puma","cve_ids":["CVE-2024-21647"],"ecosystem":"RubyGems","epss":0.00958,"exploited":false,"fixed_versions":["6.4.2","5.6.8"],"ghsa_id":"GHSA-c2f4-cvqm-65w2","id":"tcs_01M5KEJJY67WVVATJT0MQ1TM2B","modified_at":"2026-09-10T03:49:24.667590732Z","published_at":"2024-01-08T15:56:48Z","references":["https://osv.dev/vulnerability/GHSA-c2f4-cvqm-65w2","https://github.com/puma/puma/security/advisories/GHSA-c2f4-cvqm-65w2","https://nvd.nist.gov/vuln/detail/CVE-2024-21647","https://github.com/puma/puma/commit/5fc43d73b6ff193325e657a24ed76dec79133e93","https://github.com/puma/puma/commit/60d5ee3734adc8cee85c3f0561af392448fe19b7","https://github.com/puma/puma/commit/bbb880ffb6debbfdea535b4b3eb2204d49ae151d","https://github.com/puma/puma","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-21647.yml","https://lists.debian.org/debian-lts-announce/2024/11/msg00004.html"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GHSA-c2f4-cvqm-65w2","url":"https://osv.dev/vulnerability/GHSA-c2f4-cvqm-65w2"}],"summary":"Puma HTTP Request/Response Smuggling vulnerability"}