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Description

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.

PUBLISHED Reserved 2025-04-17 | Published 2025-05-07 | Updated 2026-04-08 | Assigner Wordfence




MEDIUM: 5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

Any version
affected

Timeline

2025-04-11:Discovered
2025-05-06:Disclosed

Credits

Trương Hữu Phúc (truonghuuphuc) finder

References

www.wordfence.com/...-f486-475b-b2c7-ea1007bb30d3?source=cve

plugins.trac.wordpress.org/...n-lockdown/trunk/libs/ajax.php

plugins.trac.wordpress.org/changeset/3286814/login-lockdown

cve.org (CVE-2025-3766)

nvd.nist.gov (CVE-2025-3766)

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