PT-2026-29810 · Rack · Rack

Haruki0409 · Published 2026-04-02 · Updated 2026-04-02 · CVE-2026-34763

Mitre

CVSS v3.1

5.3

Medium

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

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.

Fix

Weakness Enumeration

CWE-625

Related Identifiers

CVE-2026-34763

Affected Products

Rack

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-34763 · Security Note
• https://github.com/rack/rack/security/advisories/GHSA-7mqq-6cf9-v2qp · Note