https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-09T10:09:41.552901+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-263258 EUVD-2026-263258 2026-10-09T10:09:41.612879+00:00 EUVD-2026-263258 https://cve.radiocsirt.org/vuln/fkie_cve-2025-67717 fkie_cve-2025-67717 2026-10-09T10:09:41.612915+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-f4cf-9rvr-2rcx GHSA-f4cf-9rvr-2rcx — Zitadel Discloses the Total Number of Instance Users 2026-10-09T10:09:41.612947+00:00

Affected: Go: github.com/zitadel/zitadel

### Summary

Zitadel's User Service discloses the total number of instance users to unauthorized users.

### 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.

### Affected Versions

Systems running one of the following version are affected:

- **4.x**: `4.0.0-rc.1` through `4.7.1` - **3.x**: `3.0.0-rc.1` through `3.4.4` - **2.x**: `2.44.0` through `2.71.19`

### Patches

The vulnerability has been addressed in the latest release. The patch resolves the issue and returns the `totalResult` value corresponding to the number of instance users for whom the querying user has read permission.

- 4.x: Upgrade to >= [4.7.2](https://github.com/zitadel/zitadel/releases/tag/v4.7.2) - 3.x: Update to >= [3.4.5](https://github.com/zitadel/zitadel/releases/tag/v3.4.5) - 2.x: Update to >= [3.4.5](https://github.com/zitadel/zitadel/releases/tag/v3.4.5) (or checkout the workarounds section)

### Workarounds

The recommended solution is to update Zitadel to a patched version.

If a version upgrade is not possible, you can enable the `permissionCheckV2` feature on your instance.

### Questions

If you have any questions or comments about this advisory, please email us at [security@zitad…