CVE-2026-44511

HighCVSS 7.4/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.4/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-613

Affected software

No affected versions have been published.

Timeline

Published: May 14, 2026
Last modified: Jun 17, 2026
NVD status: Deferred

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