CVE-2026-16578: Admin Safety Guard < 1.4.0 - Unauthenticated User Data Disclosure via 2fa/app/users REST Route
The Admin Safety Guard — Login Security, Limit Logins, 2FA & Brute Force Protection WordPress plugin before 1.4.0 does not perform any capability check on one of its REST API endpoints, allowing unauthenticated attackers to retrieve the full list of registered users including their usernames, email addresses, roles, and two-factor authentication enrollment status.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-16578?
CVE-2026-16578 has a risk score of 54, indicating a medium severity level.
How do I fix CVE-2026-16578?
To fix CVE-2026-16578, update the Admin Safety Guard plugin to version 1.4.0 or higher.
What does CVE-2026-16578 exploit?
CVE-2026-16578 exploits the lack of capability checks on a REST API endpoint, allowing data disclosure of user information.
Who is affected by CVE-2026-16578?
Users of the Admin Safety Guard plugin for WordPress prior to version 1.4.0 are affected by CVE-2026-16578.
What kind of information can be disclosed due to CVE-2026-16578?
CVE-2026-16578 allows unauthenticated attackers to retrieve a full list of registered users, including usernames and email addresses.