CVE-2026-105206 — ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User Service
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 r…
Published: 2026-10-04 · CVSS: 5.3 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7