Most recent entries from all

EUVD-2026-22984

fkie_cve-2021-22538

A privilege escalation vulnerability impacting the Google Exposure Notification Verification Server (versions prior to 0.23.1), allows an attacker who (1) has UserWrite permissions and (2) is using a carefully crafted request or malicious proxy, to create another user with higher privileges than their own. This occurs due to insufficient checks on the allowed set of permissions. The new user creation event would be captured in the Event Log.

GHSA-5v95-v8c8-3rh6 — Privilege escalation in rbac

Affected: Go: github.com/google/exposure-notifications-verification-server

### Impact Using a carefully crafted request or malicious proxy, a user with `UserWrite` permissions could create another user with higher privileges than their own due to insufficient checks on the allowed set of permissions. The event would be captured in the Event Log.

### Patches The issue has been fixed in 0.24.0 and 0.23.1.

### Workarounds For users who are unable to upgrade, we recommend auditing users who have `UserWrite` permissions and regularly reviewing the Event Log for malicious activity.

### Kudos Thank you to Michael Mazzolini (Ethical Hacker at WHO) for finding and disclosing this vulnerability.

Most recent entries from all

EUVD-2026-22984

fkie_cve-2021-22538

GHSA-5v95-v8c8-3rh6 — Privilege escalation in rbac

gsd-2021-22538