ZITADEL 3.0.0 through 3.4.15 and 4.x before 4.17.3 contains an incorrect authorization flaw in the User Service API, which verifies user.read against the caller's organization rather than the organization owning the target user. An authenticated member holding org-scoped user.read can query GET /v2/users/{userId}/authentication_methods to learn which authentication method types users in other organizations have registered.
Metrics
Affected Vendors & Products
References
History
Mon, 05 Oct 2026 15:30:00 +0000
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| Metrics |
ssvc
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Sun, 04 Oct 2026 14:30:00 +0000
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| Description | ZITADEL 3.0.0 through 3.4.15 and 4.x before 4.17.3 contains an incorrect authorization flaw in the User Service API, which verifies user.read against the caller's organization rather than the organization owning the target user. An authenticated member holding org-scoped user.read can query GET /v2/users/{userId}/authentication_methods to learn which authentication method types users in other organizations have registered. | |
| Title | ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User Service | |
| First Time appeared |
Zitadel
Zitadel zitadel |
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| Weaknesses | CWE-863 | |
| CPEs | cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Zitadel
Zitadel zitadel |
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| References |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-10-04T13:10:01.420Z
Updated: 2026-10-05T14:14:18.300Z
Reserved: 2026-10-04T13:02:21.188Z
Link: CVE-2026-105206
Updated: 2026-10-05T14:14:14.885Z
Status : Deferred
Published: 2026-10-04T15:16:31.517
Modified: 2026-10-05T15:17:18.953
Link: CVE-2026-105206
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