CVE-2026-22860
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductRack
PublishedFeb 18, 2026
First seenFeb 18, 2026
Weakness typeCWE-22Path traversalCWE-548CWE-548
How to fix
Update
- rack rack2.2.22, 3.1.20, 3.2.5 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rack rack | v < 2.2.22, 3.0.0 ≤ v < 3.1.20, 3.2.0 ≤ v < 3.2.5 | 2.2.22, 3.1.20, 3.2.5 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.