LOW 3.7 NVD
CVE-2026-125108
Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Multipart::Parser.parse_boundary can skip a leading empty or quoted bound
Rack is a modular Ruby web server interface. Prior to 2.2.25, 3.1.23, and 3.2.8, Rack::Multipart::Parser.parse_boundary can skip a leading empty or quoted boundary parameter in a multipart Content-Type header and accept a later parameter. Rack can therefore parse a request body with a boundary that a conforming intermediary would not derive, allowing form fields or file uploads to reach an application without the intended proxy or web application firewall inspection. This issue is fixed in versions 2.2.25, 3.1.23, and 3.2.8.
References
- https://github.com/rack/rack/commit/19a1a19cb4da97d61c8d5effeb2e927c44370ae9
- https://github.com/rack/rack/commit/a29512324265790a5536b830490075d0d79323be
- https://github.com/rack/rack/commit/d5e928b803da30b8e40171dbd4be39bed7daa6fa
- https://github.com/rack/rack/releases/tag/v2.2.25
- https://github.com/rack/rack/releases/tag/v3.1.23
This low severity vulnerability with a CVSS score of 3.7 was published on 2026-11-09 via NVD.
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