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Vulnerability record · CVE-2026-105213 · published 4 October 2026

CVE-2026-105213: Improper authentication vulnerability

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.

8.8 CVSS 4.0 High EPSS 0.24% · top 86.7% CWE-287 · Improper authentication Deferred
8.8CVSS 4.0 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
5 Oct 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/zitadel/zitadel/security/advisories/GHSA-558c-v5wc-9w4q
https://www.vulncheck.com/advisories/zitadel-before-4.17.1-authentication-bypass-via-login-v2-for-deactivated-organizati

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-105213), CISA KEV, FIRST EPSS (scores of 2026-10-05). This page is refreshed as NVD updates the record.