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CVE-2026-23511

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CVE-2026-23511

Published: Jan 15, 2026

Modified: Jan 15, 2026

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

VendorProductVersions

zitadel

zitadel

affected
>= 4.0.0, < 4.9.1
affected
< 3.4.6

Weaknesses (CWE)

CWE-204

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

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