Login Lockdown & Protection <= 2.11 - Missing Authorization to Authenticated (Subscriber+) Arbitrary IP Whitelisting

Missing Authorization
CVE CVE-2025-3766
CVSS Medium (5.4)
Publicly Published May 6, 2025
Last Updated May 7, 2025
Researcher Trương Hữu Phúc (truonghuuphuc)
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.

References

1 affected software package

Software Type Plugin
Software Slug login-lockdown (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.11
Patched Version
  • 2.12
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