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CVE-2026-34763

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CVE-2026-34763

Published: Apr 2, 2026

Modified: Apr 2, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

Description

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.

VendorProductVersions

rack

rack

affected
< 2.2.23
affected
>= 3.0.0.beta1, < 3.1.21
affected
>= 3.2.0, < 3.2.6

Weaknesses (CWE)

CWE-625

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

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