BAN Users <= 1.5.3 - Missing Authorization to Authenticated (Subscriber+) Settings Update & Privilege Escalation

Incorrect Privilege Assignment
CVE CVE-2023-4153
CVSS 8.8 (High)
Publicly Published September 12, 2023
Last Updated September 13, 2023
Researcher István Márton - Wordfence


The BAN Users plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 1.5.3 due to a missing capability check on the 'w3dev_save_ban_user_settings_callback' function. This makes it possible for authenticated attackers, with minimal permissions such as a subscriber, to modify the plugin settings to access the ban and unban functionality and set the role of the unbanned user.



1 affected software package

Software Type Plugin
Software Slug ban-users (view on
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 1.5.3

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