CVE-2025-67717: Zitadel Discloses the Total Number of Instance Users

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-12-11 · updated 2026-10-14
Weakness: CWE-497

Description

ZITADEL is an open-source identity infrastructure tool. Versions 2.44.0 through 3.4.4 and 4.0.0-rc.1 through 4.7.1 disclose the total number of instance users to authenticated users, 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. This issue is fixed in versions 3.4.5 and 4.7.2.

Affected products

zitadel: from 2.44.0 through 2.71.19; from 3.0.0 before 3.4.5; from 4.0.0 before 4.7.2 — fixed in 3.4.5, 4.7.2

How to fix

Upgrade to a fixed version: zitadel 3.4.5, 4.7.2. Check the vendor advisory for mitigations.

References

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