Session Management Flaw in Katalyst Koi Framework

CVE-2026-44511

What is CVE-2026-44511?

The Katalyst Koi framework, designed for enhancing Rails admin functionalities, has a significant flaw in its session management system. Specifically, versions prior to 4.20.0 and 5.6.0 do not properly invalidate admin session cookies upon user logout. This oversight could allow an attacker who possesses a valid admin session cookie to maintain access to sensitive admin features, bypassing security measures until the cookie naturally expires or session secrets are renewed. This vulnerability exposes the system to potential unauthorized access and requires immediate attention from affected users.

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