CVE-2025-27220 (Medium) detected in cgi-0.4.1.gem

[mend-bolt-for-github]

CVE-2025-27220 - Medium Severity Vulnerability

Vulnerable Library - cgi-0.4.1.gem

Support for the Common Gateway Interface protocol.

Library home page: https://rubygems.org/gems/cgi-0.4.1.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /vendor/cache/cgi-0.4.1.gem

Dependency Hierarchy:

• activerecord-session_store-2.1.0.gem (Root Library)
  • ❌ cgi-0.4.1.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

Publish Date: 2025-03-03

URL: CVE-2025-27220

CVSS 3 Score Details (4.0)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: None
  • Scope: Changed
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-mhwm-jh88-3gjf

Release Date: 2025-03-03

Fix Resolution: 0.3.5.1

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