What is CVE-2025-3766?

CVE-2025-3766 is a medium-severity vulnerability in Webfactory Login Lockdown & Protection, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-05-07.

How severe is CVE-2025-3766?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Webfactory Login Lockdown & Protection

CVE-2025-3766

The Login Lockdown & Protection plugin for WordPress is vulnerable to unauthorized nonce access due to a missing capability check on the ajax_run_tool function in all versions up to, and including, 2.11. This makes it possible for authenticated attackers, with Subscriber-level access and above, to obtain a valid nonce that can be used to generate a global unlock key, which can in turn be used to add arbitrary IP address to the plugin allowlist. This can only by exploited on new installations where the site administrator hasn't visited the loginlockdown page yet.

Vulnerability class: Broken Access Control

EPSS: 0.003 (22.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Webfactory Login Lockdown & Protection — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2025-3766?: CVE-2025-3766 is a medium-severity vulnerability in Webfactory Login Lockdown & Protection, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-05-07.
How severe is CVE-2025-3766?: Medium severity. CVSS v3 base score is 5.4 out of 10.