CVE-2026-44511
Published:May 14, 2026
Updated:May 18, 2026
Katalyst Koi is a framework for building Rails admin functionality. Prior to 4.20.0 and 5.6.0, admin session cookies were not invalidated when an admin user logged out. An attacker with access to a valid admin session cookie could continue to access admin functionality after logout, until the cookie expired or session secrets were rotated. This vulnerability is fixed in 4.20.0 and 5.6.0.
Affected Packages
katalyst-koi (RUBY):
Affected version(s) >=4.0.0 <4.20.0Fix Suggestion:
Update to version 4.20.0katalyst-koi (RUBY):
Affected version(s) >=5.0.0 <5.6.0Fix Suggestion:
Update to version 5.6.0katalyst-koi (RUBY):
Affected version(s) >=4.0.0 <4.20.0Fix Suggestion:
Update to version 4.20.0Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Insufficient Session Expiration
EPSS
Base Score:
0.03