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CVE-2026-34763 (GCVE-0-2026-34763)

Vulnerability from cvelistv5 – Published: 2026-04-02 16:43 – Updated: 2026-04-02 17:41
VLAI
Title
Rack: Rack::Directory info disclosure and DoS via unescaped regex interpolation
Summary
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.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 17:41 UTC
CWE
  • CWE-625 - Permissive Regular Expression
Assigner
References
Impacted products
Vendor Product Version CPE status
rack rack Affected: < 2.2.23
Affected: >= 3.0.0.beta1, < 3.1.21
Affected: >= 3.2.0, < 3.2.6
guessed Create a notification for this product.
Show details on NVD website
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