CVE-2026-105206 (GCVE-0-2026-105206)

Vulnerability from cvelistv5 – Published: 2026-10-04 13:10 – Updated: 2026-10-04 13:10
VLAI
Title
ZITADEL before 4.17.3 Cross-Organization Authentication Method Enumeration via User Service
Summary
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.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
zitadel zitadel Affected: 0 , < 4.17.3 (semver)
Unaffected: 4.17.3 (semver)
guessed Create a notification for this product.
zitadel zitadel Affected: 0 , ≤ 4.19.4 (semver)
guessed Create a notification for this product.
Date Public
2026-09-04 00:00
Credits
IAM-marco livio-a isazajuancarlos dmitrymaranik
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}



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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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