CVE-2026-125110

NameCVE-2026-125110
DescriptionRack 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.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
ruby-rack (PTS)bookworm2.2.22-0+deb12u1vulnerable
bookworm (security)2.2.22-0+deb12u2vulnerable
trixie3.1.20-0+deb13u1vulnerable
trixie (security)3.1.20-0+deb13u2vulnerable
forky, sid3.2.8-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
ruby-racksource(unstable)3.2.8-1

Notes

https://github.com/rack/rack/security/advisories/GHSA-wvg4-6p58-3gh3

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