The User Submitted Posts – Enable Users to Submit Posts from the Front End plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 20260113. This is due to the `usp_get_submitted_category()` function accepting user-submitted category IDs from the POST body without validating them against the admin-configured allowed categories stored in `usp_options['categories']`. This makes it possible for unauthenticated attackers to assign submitted posts to arbitrary categories, including restricted ones, by crafting a direct POST request with manipulated `user-submitted-category[]` values, bypassing the frontend category restrictions.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| User Submitted Posts Plugin | — | Update user-submitted-posts plugin to version 20260217, or a newer patched version | Feb 18, 2026 | Feb 17, 2026 |
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