What is CVE-2026-44511?

CVE-2026-44511 is a high-severity vulnerability in Katalyst Koi, classified under Insufficient Session Expiration. CVSS score: 7.4/10. Published 2026-05-14.

How severe is CVE-2026-44511?

High severity. CVSS v3 base score is 7.4 out of 10.

Vulnerability in Katalyst Koi

CVE-2026-44511

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…

EPSS: 0.000 (12.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.

Affected products

Katalyst Koi — versions < 4.20.0, >= 5.0.0 <= 5.6.0

Weakness classification (CWE)

CWE-613 — Insufficient Session Expiration

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44511?: CVE-2026-44511 is a high-severity vulnerability in Katalyst Koi, classified under Insufficient Session Expiration. CVSS score: 7.4/10. Published 2026-05-14.
How severe is CVE-2026-44511?: High severity. CVSS v3 base score is 7.4 out of 10.