CVE-2026-105213: Zitadel

High severity, CVSS 8.2. EPSS: 0.2% chance of exploitation in the next 30 days.

ZITADEL 4.x before 4.17.1 does not check an organization's inactive state during Login V2 authentication, verifying only the individual user's status. Users of a deactivated organization who hold valid credentials, an existing session, or a refresh token can still sign in, create sessions, and obtain or refresh tokens.

Affected products

• Zitadel Zitadel: before 4.17.1 (fixed in 4.17.1)

Published 2026-10-04. Last modified 2026-10-05.