CVE-2026-105209

ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey Enrollment

State: Published
Severity: 9.3 Critical
Published: Oct 4, 2026
Updated: Oct 29, 2026
Reserved: Oct 4, 2026

Description

ZITADEL 3.x before 3.4.15 and 4.x before 4.17.1 contains an improper authorization vulnerability: when issuing passkey or passwordless enrollment codes, it checks only the organization in the x-zitadel-orgid header, not the target user's organization. Attackers with user-write permission in one organization can obtain an enrollment code for a user in another organization on the same instance and register their own authenticator to take over that account.

Scores

CVSS	Score	Vector	Source
4.0	9.3 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N	VulnCheck
3.1	9.6 Critical	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N	VulnCheck

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
zitadelzitadel	4.0.0 to before 4.17.1Affected 4.17.1Not affected
zitadelzitadel	before 3.4.15Affected 3.4.15Not affected

References

GitHub Security Advisory (GHSA-pq2q-2c6r-75c4)vendor-advisory
VulnCheck Advisory: ZITADEL before 3.4.15 and 4.17.1 Cross-Organization Account Takeover via Passkey Enrollmentthird-party-advisory

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