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CVE-2026-34763

Rack: Rack::Directory info disclosure and DoS via unescaped regex interpolation PUBLISHED

Description (CNA)

Rack is a modular Ruby web server interface. Prior to versions 2.2.23, 3.1.21, and 3.2.6, Rack::Directory interpolates the configured root path directly into a regular expression when deriving the displayed directory path. If root contains regex metacharacters such as +, *, or ., the prefix stripping can fail and the generated directory listing may expose the full filesystem path in the HTML output. This issue has been patched in versions 2.2.23, 3.1.21, and 3.2.6.

Affected (CNA)

Vendor / productVersions
rack / rackaffected < 2.2.23; affected >= 3.0.0.beta1, < 3.1.21; affected >= 3.2.0, < 3.2.6

CWE

CWE-625

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.