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.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Rack
  • Rack

Configuration 1 [-]

OR cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*
cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*
cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*

No data.

References
Link Providers
https://github.com/rack/rack/commit/803aa221e8302719715e224f4476e438f2531a53 cve-icon cve-icon cve-icon
https://github.com/rack/rack/commit/aeac570bb8080ca7b53b7f2e2f67498be7ebd30b cve-icon cve-icon cve-icon
https://github.com/rack/rack/commit/b13bc6bfc7506aca3478dc5ac1c2ec6fc53f82a3 cve-icon cve-icon cve-icon
https://github.com/rack/rack/security/advisories/GHSA-8cgq-6mh2-7j6v cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-27111 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-27111 cve-icon
History

Fri, 10 Oct 2025 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:rack:rack:*:*:*:*:*:ruby:*:*
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Wed, 05 Mar 2025 14:45:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

threat_severity

Moderate

Tue, 04 Mar 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 04 Mar 2025 15:45:00 +0000

Type Values Removed Values Added
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.
Title Escape Sequence Injection vulnerability in Rack lead to Possible Log Injection
Weaknesses CWE-117
CWE-93
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-03-04T15:26:55.377Z

Updated: 2025-03-04T15:44:37.460Z

Reserved: 2025-02-18T16:44:48.766Z

Link: CVE-2025-27111

cve-icon Vulnrichment

Updated: 2025-03-04T15:44:32.673Z

cve-icon NVD

Status : Analyzed

Published: 2025-03-04T16:15:40.487

Modified: 2025-10-10T16:40:09.310

Link: CVE-2025-27111

cve-icon Redhat

Severity : Moderate

Publid Date: 2025-03-04T15:26:55Z

Links: CVE-2025-27111 - Bugzilla