The Stop Spammers Security | Block Spam Users, Comments, Forms plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2024.4. This is due to missing or incorrect nonce validation on the sfs_process AJAX action. This makes it possible for unauthenticated attackers to add arbitrary IPs to the plugin's allowlist and blocklist via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Stop Spammer Registrations Plugin Plugin | — | Update stop-spammer-registrations-plugin plugin to version 2024.5, or a newer patched version | May 15, 2025 | May 3, 2024 |
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