🔍 What is Cgi?

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🛡️ Security Overview

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⚠️ Known Vulnerabilities

CVE-2021-41816

CRITICAL CVSS 9.8 Feb 6, 2022

This vulnerability in Ruby's CGI.escape_html function allows integer overflow and buffer overflow when processing very long strings on platforms where size_t and long have different byte sizes (like W...

CVE-2021-41819

HIGH CVSS 7.5 Jan 1, 2022

This vulnerability in Ruby's CGI::Cookie.parse function mishandles security prefixes in cookie names, allowing attackers to bypass cookie security mechanisms. It affects Ruby versions through 2.6.8 an...

CVE-2025-27220

MEDIUM CVSS 4.0 Mar 4, 2025

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the CGI gem for Ruby versions before 0.4.2. This vulnerability allows attackers to cause excessive CPU consumption by sending spe...