WordPress Hybrid Composer 1.4.6 contains an unauthenticated settings change vulnerability that allows unauthenticated attackers to modify WordPress options by exploiting the hc_ajax_save_option action. Attackers can send POST requests to the admin-ajax.php endpoint with the action parameter set to hc_ajax_save_option to enable user registration and set the default role to administrator, enabling account takeover.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Hybrid Composer Plugin | — | Update hybrid-composer plugin to version 1.4.7, or a newer patched version | Jun 12, 2026 | Jun 5, 2026 |
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