CVE-2025-27111 Information

Description

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.

Reference

https://github.com/rack/rack/commit/803aa221e8302719715e224f4476e438f2531a53 https://github.com/rack/rack/commit/aeac570bb8080ca7b53b7f2e2f67498be7ebd30b https://github.com/rack/rack/commit/b13bc6bfc7506aca3478dc5ac1c2ec6fc53f82a3 https://github.com/rack/rack/security/advisories/GHSA-8cgq-6mh2-7j6v