Ruby Programming Language Cgi
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By the Year
In 2025 there have been 2 vulnerabilities in Ruby Programming Language Cgi with an average score of 7.5 out of ten. Cgi did not have any published security vulnerabilities last year. That is, 2 more vulnerabilities have already been reported in 2025 as compared to last year.
| Year | Vulnerabilities | Average Score |
|---|---|---|
| 2025 | 2 | 7.50 |
| 2024 | 0 | 0.00 |
| 2023 | 0 | 0.00 |
| 2022 | 3 | 8.70 |
| 2021 | 0 | 0.00 |
| 2020 | 0 | 0.00 |
| 2019 | 0 | 0.00 |
| 2018 | 0 | 0.00 |
It may take a day or so for new Cgi vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.
Recent Ruby Programming Language Cgi Security Vulnerabilities
In the CGI gem before 0.4.2 for Ruby
CVE-2025-27220
7.5 - High
- March 04, 2025
In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.
In the CGI gem before 0.4.2 for Ruby
CVE-2025-27219
7.5 - High
- March 04, 2025
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) vulnerability. The method does not impose any limit on the length of the raw cookie value it processes. This oversight can lead to excessive resource consumption when parsing extremely large cookies.
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
CVE-2021-33621
8.8 - High
- November 18, 2022
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 applications that use untrusted user input either to generate an HTTP response or to create a CGI::Cookie object.
Injection
CGI.escape_html in Ruby before 2.7.5 and 3.x before 3.0.3 has an integer overflow and resultant buffer overflow
CVE-2021-41816
9.8 - Critical
- February 06, 2022
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 platforms (such as Windows) where size_t and long have different numbers of bytes. This also affects the CGI gem before 0.3.1 for Ruby.
Integer Overflow or Wraparound
CGI::Cookie.parse in Ruby through 2.6.8 mishandles security prefixes in cookie names
CVE-2021-41819
7.5 - High
- January 01, 2022
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.
Reliance on Cookies without Validation and Integrity Checking
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