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CVE-2026-23511

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/15/2026

Last Modified1/20/2026

Sourcenvd

Honeypot Sightings0

Affected Products

zitadel:zitadel

Weaknesses (CWE)

CWE-204

References

https://github.com/zitadel/zitadel/commit/b85ab69e4679b0268e2b0e9b4cd04e934af10dd2(security-advisories@github.com)

https://github.com/zitadel/zitadel/commit/c300d4cc6a2775ab17ddfe76492f24170f8b858d(security-advisories@github.com)

https://github.com/zitadel/zitadel/releases/tag/v3.4.6(security-advisories@github.com)

https://github.com/zitadel/zitadel/releases/tag/v4.9.1(security-advisories@github.com)

https://github.com/zitadel/zitadel/security/advisories/GHSA-pvm5-9frx-264r(security-advisories@github.com)

IOC Correlations

No correlations recorded

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