CVE-2026-15402: Arraytics Eventin – Event Calendar, Tickets, Registration, Booking & Woocommerce

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'etn_shedule_objective' schedule_slot Parameter in all versions up to, and including, 4.1.23 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• Arraytics Eventin – Event Calendar, Tickets, Registration, Booking & Woocommerce: up to and including 4.1.23

Published 2026-09-15. Last modified 2026-09-16.