CVE-2026-12956

The WP Event Solution (Eventin) plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 4.1.22 via the create item() handler for the /wp-json/eventin/v2/orders REST endpoint. The endpoint's create item permissions check() function only verifies a wp rest nonce (which is leaked to every visitor through the etn-public script's localized data obj on every frontend page) and accepts a user-supplied 'status' value in prepare item for database() with no whitelist validation. This makes it possible for unauthenticated attackers to create etn-order posts with status='completed' that are counted as sold by etn get sold tickets by event(); because the auto-cleanup wp schedule single event() in create item() only fires for status='pending' orders, the forged completed orders persist indefinitely and exhaust ticket inventory.