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      <title>CVE-2026-13039 — Eventin 4.0.26 - 4.1.15 - Missing Authorization to Unauthenticated Payment Bypass via REST API</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-13039</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; arraytics Eventin – Event Calendar, Event Registration, Tickets &amp;amp; Booking (AI Powered)&lt;/p&gt;
&lt;p&gt;The Eventin – Event Calendar, Event Registration, Tickets &amp;amp; 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.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; arraytics Eventin – Event Calendar, Event Registration, Tickets &amp;amp; Booking (AI Powered)&lt;/p&gt;
&lt;p&gt;The Eventin – Event Calendar, Event Registration, Tickets &amp;amp; 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.&lt;/p&gt;</content:encoded>
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