CVE-2026-22860
unknown
CVSS v3
—
CVSS v2
—
VIR risk
—
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.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-22860
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-22860.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 2.2.22-0+deb12u1 |
| debian | bullseye | fixed | 2.1.4-3+deb11u5 |
| debian | forky | fixed | 3.2.5-1 |
| debian | sid | fixed | 3.2.5-1 |
| debian | trixie | fixed | 3.1.20-0+deb13u1 |
References
- https://github.com/rack/rack/security/advisories/GHSA-mxw3-3hh2-x2mh
- https://www.suse.com/security/cve/CVE-2026-22860.html
- https://nvd.nist.gov/vuln/detail/CVE-2026-22860
- https://github.com/rack/rack/commit/75c5745c286637a8f049a33790c71237762069e7
- https://github.com/rack/rack
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2026-22860.yml
- https://security-tracker.debian.org/tracker/CVE-2026-22860
Verify integrity in audit chain (admin only). AS-IS.