CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:NCVE-2025-27111
Medium (6.9) in rack rack. EPSS 0.8% chance of exploitation in the next 30 days. Fixed in rack 2.2.12, 3.0.13, 3.1.11.
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.
Severity
CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N- EPSS
- 0.8% chance of exploitation in the next 30 days; higher than 54% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-93, CWE-117
- Published
- Modified
- Record from
- the NVD, synced
Affected
- rack:rack
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-8cgq-6mh2-7j6v | RubyGems | rack | <2.2.12 | 2.2.12 |
| GHSA-8cgq-6mh2-7j6v | RubyGems | rack | >=3.0 <3.0.13 | 3.0.13 |
| GHSA-8cgq-6mh2-7j6v | RubyGems | rack | >=3.1 <3.1.11 | 3.1.11 |
References
- 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
- https://lists.debian.org/debian-lts-announce/2025/03/msg00016.html