CVE-2026-105209

Critical

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.

SeverityCritical

CVSS9.6

Exploit probability—

ProductZitadel

PublishedOct 4, 2026

First seenOct 4, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

zitadel zitadel4.17.1, 3.4.15 or later

Vendor advisories

github.com/zitadel/zitadel/security/advisories/GHSA-pq2q-2c6r-75c4

Affected products

Product	Affected versions	Fixed in
zitadel zitadel	4.0.0 ≤ v < 4.17.1, v < 3.4.15	4.17.1, 3.4.15

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