All vulnerabilities
CVE-2026-105213GHSA-558c-v5wc-9w4q

ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizations

zitadel zitadel
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 13% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.17.1Fixed versionCVE List
Published4 Oct 2026Updated 5 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 2

  • zitadelaffected: all versions before 4.17.1CVE List
  • zitadelunaffected: 4.17.1CVE List

References 2