CVE-2026-44511 | BDVDB-2026-333388 Detail

katalystkoi

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-613 Insufficient Session Expiration

References#

https://github.com/katalyst/koi/security/advisories/GHSA-4cx3-3c38-j9vv

Exploit#

No public exploit known

History#

Version 12026-05-14Record published in the CVE List.

Published

Published: 2026-05-14
Last modified: 2026-05-14

Vendor information

Vendor: katalyst
Product: koi

All katalyst vulnerabilities

Score

7.4 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 9.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Not classified

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 4.20.0
Fixed
Not stated
Vulnerable
>= 5.0.0 <= 5.6.0
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.4 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	High
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).