CVE-2026-23511

MEDIUM EPSS 28.1%
Published Jan 15, 20265mo ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Medium
Find Similar
Published Jan 15, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
5.3
Exploitability
3.9
Impact
1.4
Vector string
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

Threat Intelligence

EPSS Exploit Probability
28.1% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-204

Affected Products 3

VendorProductVersionRange
zitadelzitadel*≥2.0.0  –  ≤2.71.19
zitadelzitadel*≥3.0.0  –  <3.4.6
zitadelzitadel*≥4.0.0  –  <4.9.1

References 5

  • github.com https://github.com/zitadel/zitadel/commit/b85ab69e4679b0268e2b0e9b4cd04e934af10dd2
    Patch
  • github.com https://github.com/zitadel/zitadel/commit/c300d4cc6a2775ab17ddfe76492f24170f8b858d
    Patch
  • github.com https://github.com/zitadel/zitadel/releases/tag/v3.4.6
    Release Notes
  • github.com https://github.com/zitadel/zitadel/releases/tag/v4.9.1
    Release Notes
  • github.com https://github.com/zitadel/zitadel/security/advisories/GHSA-pvm5-9frx-264r
    Third Party Advisory

Remediation

  • github.com https://github.com/zitadel/zitadel/commit/b85ab69e4679b0268e2b0e9b4cd04e934af10dd2
    Patch
  • github.com https://github.com/zitadel/zitadel/commit/c300d4cc6a2775ab17ddfe76492f24170f8b858d
    Patch