IP Blocker Lite <= 11.1.1 - Cross-Site Request Forgery

Cross-Site Request Forgery (CSRF)
CVE CVE-2023-23993
CVSS 5.4 (Medium)
Publicly Published March 28, 2023
Last Updated January 22, 2024
Researcher Mika


The IP Blocker Lite plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 11.1.1. This is due to missing or incorrect nonce validation on the save_configuration, delete_ip, and add_ip_to_db functions. This makes it possible for unauthenticated attackers to enable or disable the "Display blank page to the Banned User" setting, delete blocked IPs from the IP blocklist, or add arbitrary IPs to the IP blocklist via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.



Vulnerability Details for LionScripts: IP Blocker Lite

Software Type Plugin
Software Slug ip-address-blocker (view on wordpress.org)
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
  • <= 11.1.1

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