本页列出影响 ruby-lang cgi 的已公开 CVE 漏洞（通过 NVD CPE 关联）。每行包含严重程度评分、摘要与发布日期，便于识别与分析安全问题。
| CVE | 摘要 | 来源 | 最高 CVSS | EPSS % | 公开时间 | 更新时间 |
|---|---|---|---|---|---|---|
| CVE-2025-27220 | In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method. | [email protected] | 4.0 | 0.70% | 2025-03-03 | 2026-06-17 |
| CVE-2025-27219 | 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. | [email protected] | 5.8 | 0.78% | 2025-03-03 | 2026-06-17 |
| CVE-2021-33621 | 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. | [email protected] | 8.8 | 2.29% | 2022-11-18 | 2026-06-16 |
| CVE-2021-41816 | 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. | [email protected] | 9.8 | 4.77% | 2022-02-06 | 2026-06-17 |
| CVE-2021-41819 | 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. | [email protected] | 7.5 | 2.93% | 2022-01-01 | 2026-06-17 |