MEDIUM 5.3 NVD
CVE-2026-125110
Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Static serves a path after Utils.clean_path_info normalization but evalua
Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Static serves a path after Utils.clean_path_info normalization but evaluates header_rules against a path that is only URL-decoded. An unauthenticated attacker can request a known file through raw or percent-encoded dot segments and receive it without path-specific security headers such as Content-Disposition or Content-Security-Policy. Applications that do not use path-specific header_rules are not affected. This issue is fixed in versions 2.2.25, 3.1.23, and 3.2.8.
References
- https://github.com/rack/rack/commit/18a07fe553afb4d8a678d6a948cd6ba1e11e28be
- https://github.com/rack/rack/commit/9d7f19484ffd5ed5e032678c26ee6eff96d3a0a3
- https://github.com/rack/rack/commit/e88097ccb88be44d06d47b42daffe04929516ee4
- https://github.com/rack/rack/security/advisories/GHSA-wvg4-6p58-3gh3
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-11-09 via NVD.
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