Every CVE whose affected-product data names Ruby-lang Cgi, ordered by CVSS severity, with EPSS exploit prediction and CISA KEV status.
CVEs (5)
CVE-2021-41816 — CVSS 9.8 (critical): CGI.escape_html in Ruby before 2.7.5 and 3.x before 3.0.3 has an integer overflow and resultant buffer overflow via a long string on…
CVE-2021-33621 — CVSS 8.8 (high): The cgi gem before 0.1.0.2, 0.2.x before 0.2.2, and 0.3.x before 0.3.5 for Ruby allows HTTP response splitting. This is relevant to…
CVE-2021-41819 — CVSS 7.5 (high): CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names. This also affects the CGI gem through 0.3.0 for Ruby.
CVE-2025-27219 — CVSS 5.8 (medium): In the CGI gem before 0.4.2 for Ruby, the CGI::Cookie.parse method in the CGI library contains a potential Denial of Service (DoS)…
CVE-2025-27220 — CVSS 4.0 (medium): In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.