CVE Tools

Cgi

7 CVEs tracked. None of them is in CISA KEV.

This hub aggregates every CVE we track for Cgi, a product in the oss libraries space. Use it to gauge the current risk picture and drill into individual advisories.

Cgi CVEs per month

Oct 2024 to Sep 2026. Point at a month, or focus the strip and use the arrow keys.
Cgi CVEs per month
MonthCVEs
2024-100
2024-110
2024-120
2025-010
2025-020
2025-032
2025-040
2025-050
2025-060
2025-070
2025-080
2025-090
2025-100
2025-110
2025-120
2026-010
2026-020
2026-030
2026-040
2026-050
2026-060
2026-070
2026-080
2026-090

Severity

How the 7 CVEs score on CVSS. Severity is not exploitation: KEV is counted above.

  • Critical114%
  • High229%
  • Medium457%

Latest CVEs

The 7 most recently published vulnerabilities affecting Cgi.

  1. CVE-2025-27219In 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) vulnerability. The method does not impose any limit on the length ...5.8
  2. CVE-2025-27220In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.4.0
  3. CVE-2021-33621The 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 applications that use untrusted user input either to generate an ...8.8
  4. CVE-2021-41816CGI.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 platforms (such as Windows) where size_t and long have different...9.8
  5. CVE-2021-41819CGI::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.7.5
  6. CVE-2017-8920irc.cgi in CGI:IRC before 0.5.12 reflects user-supplied input from the R parameter without proper output encoding, aka XSS.6.1
  7. CVE-2011-0050Cross-site scripting (XSS) vulnerability in the nonjs interface (interfaces/nonjs.pm) in CGI:IRC before 0.5.10 allows remote attackers to inject arbitrary web script or HTML via the R parameter.4.3

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