CVE-2026-22860
Rack has a Directory Traversal via Rack:Directory
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-22 CWE-548 |
| Vendor | rack |
| Product | rack |
| Published | Feb 18, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected Versions
rack / rack
< 2.2.22 >= 3.0.0.beta1, < 3.1.20 >= 3.2.0, < 3.2.5
References
github.com: https://github.com/rack/rack/security/advisories/GHSA-mxw3-3hh2-x2mh github.com: https://github.com/rack/rack/commit/75c5745c286637a8f049a33790c71237762069e7 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-22860 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2440737 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22860.json