{"action":"Upgrade cgi to 0.1.0.1 or later.","affected":[{"fixed":"0.3.1","introduced":"0.3.0"},{"fixed":"0.2.1","introduced":"0.2.0"},{"fixed":"0.1.0.1","introduced":"0"}],"component":"cgi","cve_ids":["CVE-2021-41816"],"ecosystem":"RubyGems","epss":0.04898,"exploited":false,"fixed_versions":["0.3.1","0.2.1","0.1.0.1"],"ghsa_id":"GHSA-5cqm-crxm-6qpv","id":"tcs_01M5KEGZS4QWGDCSKRS9EMF48Z","modified_at":"2026-08-13T20:11:58.269981947Z","published_at":"2021-12-14T21:36:20Z","references":["https://osv.dev/vulnerability/GHSA-5cqm-crxm-6qpv","https://nvd.nist.gov/vuln/detail/CVE-2021-41816","https://github.com/ruby/cgi/commit/959ccf0b6a672bcc64aeaa60c6e1f9e728f1e87f","https://github.com/ruby/cgi/commit/ad079c1cb5f58eba1ffac46da79995fcf94a3a6e","https://github.com/ruby/cgi/commit/c6a37a671b556eb06140ea89cc465136b24207a6","https://github.com/ruby/cgi/commit/c728632c1c09d46cfd4ecbff9caaa3651dd1002a","https://hackerone.com/reports/1328463","https://www.ruby-lang.org/en/news/2021/11/24/buffer-overrun-in-cgi-escape_html-cve-2021-41816","https://security.netapp.com/advisory/ntap-20220303-0006","https://security.gentoo.org/glsa/202401-27","https://security-tracker.debian.org/tracker/CVE-2021-41816","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UTOJGS5IEFDK3UOO7IY4OTTFGHGLSWZF","https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IUXQCH6FRKANCVZO2Q7D2SQX33FP3KWN","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTOJGS5IEFDK3UOO7IY4OTTFGHGLSWZF","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUXQCH6FRKANCVZO2Q7D2SQX33FP3KWN","https://groups.google.com/g/ruby-security-ann/c/4MQ568ZG47c","https://github.com/rubysec/ruby-advisory-db/blob/master/gems/cgi/CVE-2021-41816.yml","https://github.com/ruby/cgi"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"GHSA-5cqm-crxm-6qpv","url":"https://osv.dev/vulnerability/GHSA-5cqm-crxm-6qpv"}],"summary":"Buffer overrun in CGI.escape_html"}