CVE-2026-22860
February 18, 2026
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 Packages
https://github.com/rack/rack.git (GITHUB):
Affected version(s) >=v3.2.0 <v3.2.5Fix Suggestion:
Update to version v3.2.5https://github.com/rack/rack.git (GITHUB):
Affected version(s) >=v2.0.9.2 <v2.2.22Fix Suggestion:
Update to version v2.2.22https://github.com/rack/rack.git (GITHUB):
Affected version(s) >=v3.0.1 <v3.1.20Fix Suggestion:
Update to version v3.1.20rack (RUBY):
Affected version(s) >=3.2.0 <3.2.5Fix Suggestion:
Update to version 3.2.5rack (RUBY):
Affected version(s) >=3.0.0.beta1 <3.1.20Fix Suggestion:
Update to version 3.1.20rack (RUBY):
Affected version(s) >=0.1.0 <2.2.22Fix Suggestion:
Update to version 2.2.22Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
EPSS
Base Score:
0.05
