Zitadel Discloses the Total Number of Instance Users
Published Dec 11, 2025 · Updated Oct 23, 2026 · Also known as GO-2025-4227, GHSA-f4cf-9rvr-2rcx
Original summary
Normalized public record · Updated Oct 23, 2026
Zitadel Discloses the Total Number of Instance Users
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Zitadel's User Service discloses the total number of instance users to unauthorized users.
Potential impact
The ZITADEL User Service exposes the total number of users within an instance to any authenticated user, regardless of their specific permissions. While this does not leak individual user data or PII, disclosing the total user count via the totalResult field constitutes an information disclosure vulnerability that may be sensitive in certain contexts.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- LOW
- Confidence
- Not available
- Aliases
- GO-2025-4227, GHSA-f4cf-9rvr-2rcx
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
Record history
Published Dec 11, 2025 · Last refreshed Oct 23, 2026