ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login interfaces. An unauthenticated attacker can exploit this flaw to confirm the existence of valid user accounts by iterating through usernames and userIDs. This vulnerability is fixed in 4.9.1 and 3.4.6.
History

Thu, 15 Jan 2026 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 Jan 2026 19:30:00 +0000

Type Values Removed Values Added
Description ZITADEL is an open source identity management platform. Prior to 4.9.1 and 3.4.6, a user enumeration vulnerability has been discovered in Zitadel's login interfaces. An unauthenticated attacker can exploit this flaw to confirm the existence of valid user accounts by iterating through usernames and userIDs. This vulnerability is fixed in 4.9.1 and 3.4.6.
Title ZITADEL has a user enumeration vulnerability in Login UIs
Weaknesses CWE-204
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-01-15T19:56:24.164Z

Reserved: 2026-01-13T18:22:43.979Z

Link: CVE-2026-23511

cve-icon Vulnrichment

Updated: 2026-01-15T19:56:21.421Z

cve-icon NVD

Status : Received

Published: 2026-01-15T20:16:05.167

Modified: 2026-01-15T20:16:05.167

Link: CVE-2026-23511

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.