CVE-2025-27610 (High) detected in rack-2.2.11.gem

[mend-bolt-for-github[bot]]

CVE-2025-27610 - High Severity Vulnerability

Vulnerable Library - rack-2.2.11.gem

Rack provides a minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and software in between (the so-called middleware) into a single method call.

Library home page: https://rubygems.org/gems/rack-2.2.11.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /vendor/cache/rack-2.2.11.gem

Dependency Hierarchy:

• rspec-rails-7.1.1.gem (Root Library)
  • actionpack-7.0.8.7.gem
    • :x: rack-2.2.11.gem (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Rack provides an interface for developing web applications in Ruby. Prior to versions 2.2.13, 3.0.14, and 3.1.12, "Rack::Static" can serve files under the specified "root:" even if "urls:" are provided, which may expose other files under the specified "root:" unexpectedly. The vulnerability occurs because "Rack::Static" does not properly sanitize user-supplied paths before serving files. Specifically, encoded path traversal sequences are not correctly validated, allowing attackers to access files outside the designated static file directory. By exploiting this vulnerability, an attacker can gain access to all files under the specified "root:" directory, provided they are able to determine then path of the file. Versions 2.2.13, 3.0.14, and 3.1.12 contain a patch for the issue. Other mitigations include removing usage of "Rack::Static", or ensuring that "root:" points at a directory path which only contains files which should be accessed publicly. It is likely that a CDN or similar static file server would also mitigate the issue.

Publish Date: 2025-03-10

URL: CVE-2025-27610

CVSS 3 Score Details (7.5)

Base Score Metrics:

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

For more information on CVSS3 Scores, click here.

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