The MaxiBlocks Builder plugin for WordPress is vulnerable to arbitrary media file deletion due to insufficient file ownership validation on the 'maxi_remove_custom_image_size' AJAX action in all versions up to, and including, 2.1.8. This makes it possible for authenticated attackers, with Author-level access and above, to delete arbitrary files in the wp-content/uploads directory, including files uploaded by other users and administrators.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Maxi Blocks Plugin | — | Update maxi-blocks plugin to version 2.1.9, or a newer patched version | May 4, 2026 | Apr 23, 2026 |
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