CVE-2025-27111: medium-severity vulnerability in rack
Escape Sequence Injection vulnerability in Rack lead to Possible Log Injection
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.8%
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.
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
Affected products
rack · rackRelated CVEs — rack
In the same product, most dangerous first.
CVE-2024-25126MEDIUMRack ReDos in content type parsing (2nd degree polynomial)EPSS 35.4%CVE-2019-16782MEDIUMPossible Information Leak / Session Hijack Vulnerability in RackEPSS 3.7%CVE-2024-26146MEDIUMPossible Denial of Service Vulnerability in Rack Header ParsingEPSS 2.0%CVE-2024-26141MEDIUMPossible DoS Vulnerability with Range Header in RackEPSS 1.6%CVE-2025-46727HIGHUnbounded-Parameter DoS in Rack::QueryParserEPSS 1.2%CVE-2025-25184MEDIUMPossible Log Injection in Rack::CommonLoggerEPSS 1.2%
References
https://github.com/rack/rack/commit/803aa221e8302719715e224f4476e438f2531a53https://github.com/rack/rack/commit/aeac570bb8080ca7b53b7f2e2f67498be7ebd30bhttps://github.com/rack/rack/commit/b13bc6bfc7506aca3478dc5ac1c2ec6fc53f82a3https://github.com/rack/rack/security/advisories/GHSA-8cgq-6mh2-7j6vhttps://lists.debian.org/debian-lts-announce/2025/03/msg00016.html