CVE-2026-105213

ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizations

State: Published
Severity: 8.8 High
Published: Oct 4, 2026
Updated: Oct 5, 2026
Reserved: Oct 4, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	8.8 High	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	VulnCheck
3.1	8.2 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N	VulnCheck

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
zitadelzitadel	before 4.17.1Affected 4.17.1Not affected

References

GitHub Security Advisory (GHSA-558c-v5wc-9w4q)vendor-advisory
VulnCheck Advisory: ZITADEL before 4.17.1 Authentication Bypass via Login V2 for Deactivated Organizationsthird-party-advisory

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