CVE-2025-27111 (Medium) detected in rack-2.2.9.gem

## CVE-2025-27111 - Medium Severity Vulnerability
Vulnerable Library - rack-2.2.9.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-2.2.9.gem

Path to dependency file: /Gemfile.lock

Path to vulnerable library: /home/wss-scanner/.gem/ruby/3.2.0/cache/rack-2.2.9.gem

Dependency Hierarchy:
- rack-test-2.1.0.gem (Root Library)
- :x: **rack-2.2.9.gem** (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Rack is a modular Ruby web server interface. The Rack::Sendfile middleware logs unsanitised header values from the X-Sendfile-Type header. An attacker can exploit this by injecting escape sequences (such as newline characters) into the header, resulting in log injection. This vulnerability is fixed in 2.2.12, 3.0.13, and 3.1.11.

Publish Date: 2025-03-04

URL: CVE-2025-27111

CVSS 3 Score Details (5.3)

Base Score Metrics:
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Impact Metrics:
- Confidentiality Impact: None
- Integrity Impact: Low
- Availability Impact: None

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://github.com/advisories/GHSA-8cgq-6mh2-7j6v

Release Date: 2025-03-04

Fix Resolution: 2.2.12,3.1.11,3.0.13,v2.2.12,v3.0.13,v3.1.11

***
Step up your Open Source Security Game with Mend [here](https://www.whitesourcesoftware.com/full_solution_bolt_github)

Start with Gemfile.lock and the rack-test dependency hierarchy shown in the issue. Update Rack from 2.2.9 to a fixed release, such as 2.2.12, then verify that dependency resolution no longer selects the vulnerable version and the project checks pass.

Written by the indexing model from the issue text.