Eventin 4.0.26 - 4.1.15 - Missing Authorization to Unauthenticated Payment Bypass via REST API
| CVE | CVE-2026-13039 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | July 9, 2026 |
| Last Updated | July 10, 2026 |
| Researcher |
Niv Kochan
|
Description
The Eventin – Event Calendar, Event Registration, Tickets & Booking (AI Powered) plugin for WordPress is vulnerable to authorization bypass due to a regression in versions from 4.0.26 up to and including 4.1.15. This is due to the plugin not properly verifying that a user is authorized to perform an action in the payment_complete() function of PaymentController.php. This makes it possible for unauthenticated attackers to mark unpaid ticket orders as completed by submitting a fabricated SureCart checkout ID or FluentCart cart hash, granting themselves paid event access, QR-code attendee tickets, and order confirmation emails without making any real payment. The wp_rest nonce required to reach the vulnerable endpoint is embedded in every public event page, meaning no WordPress session or credentials are needed to obtain it. This vulnerability represents a regression — the same function and endpoint were previously patched but the fix did not persist through subsequent releases.
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Vulnerability Details for Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
| Software Type | Plugin |
|---|---|
| Software Slug | wp-event-solution (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.1.16, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Eventin – Event Calendar, Tickets, Registration, Booking & WooCommerce
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