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CVE-2026-44511— Katalyst Koi: Session cookies can be replayed after user logout

CVSS 7.4 · High EPSS 0.03% · P9
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I. Basic Information for CVE-2026-44511

Vulnerability Information
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Vulnerability Title
Katalyst Koi: Session cookies can be replayed after user logout
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的会话过期机制
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
katalystkoi < 4.20.0 -

II. Public POCs for CVE-2026-44511

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III. Intelligence Information for CVE-2026-44511

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IV. Related Vulnerabilities

Same weakness: CWE-613

V. Comments for CVE-2026-44511

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