CVE-2026-22860

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.

Affected products

Linuxmint, Rack, Red Os, Ubuntu

Rack

< 2.2.22, 3.1.20, 3.2.5

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

0.7% (48th percentile)

Weakness

CWE-22, CWE-548

NVD status

Modified

Published

2026-02-18

No exploit for CVE-2026-22860 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.