CVE-2026-125108 | BDVDB-2026-402487 Detail
rackrack
Description#
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.
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact low, availability impact none. Attack vector: network.
Weaknesses#
- CWE-436 Interpretation Conflict
References#
- https://github.com/rack/rack/security/advisories/GHSA-p8x9-v4hv-2w4g
- 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
- https://github.com/rack/rack/releases/tag/v3.2.8
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.