VULNERABILITY INTELLIGENCE

CVE-2026-22860

CVSS score7.5 HIGH
EPSS probability0.76%
CISA KEVNot currently listed
Published2026-02-18
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Description

Rack is a modular Ruby web server interface. Prior to versions 2.2.22, 3.1.20, and 3.2.5, `Rack::Directory`’s path check used a string prefix match on the expanded path. A request like `/../root_example/` can escape the configured root if the target path starts with the root string, allowing directory listing outside the intended root. Versions 2.2.22, 3.1.20, and 3.2.5 fix the issue.

Weakness classification

  • security-advisories@github.com: CWE-22
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-22

Primary references