The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ultp_shareCount_callback() function in all versions up to, and including, 5.0.5. This makes it possible for unauthenticated attackers to modify the share_count post meta for any post, including private or draft posts.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ultimate Post Plugin | — | Update ultimate-post plugin to version 5.0.6, or a newer patched version | Apr 30, 2026 | Apr 15, 2026 |
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