CVE-2026-23511

5.3 MEDIUM
Published: January 15, 2026 Modified: January 20, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/zitadel/zitadel/releases/tag/v3.4.6
Source: security-advisories@github.com
Release Notes
https://github.com/zitadel/zitadel/releases/tag/v4.9.1
Source: security-advisories@github.com
Release Notes
https://github.com/zitadel/zitadel/security/advisories/GHSA-pvm5-9frx-264r
Source: security-advisories@github.com
Third Party Advisory

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.3 / 10.0
EPSS (Exploit Probability)
0.0%
5th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

zitadel