CVE-2026-13770

The AppMySite – WordPress & WooCommerce Mobile App Builder (No-Code Android & iOS App Maker) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via save_ams_license_key AJAX Handler in all versions up to, and including, 3.15.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The save_ams_license_key AJAX handler performs no capability check and no nonce verification, meaning any authenticated user with Subscriber-level access or above can invoke it to store the malicious payload.

• CWE-79

• https://plugins.trac.wordpress.org/browser/appmysite/tags/3.15.3/includes/class-ams-admin-functions.php#L34
• https://plugins.trac.wordpress.org/browser/appmysite/tags/3.15.3/includes/class-ams-admin-functions.php#L67
• https://plugins.trac.wordpress.org/browser/appmysite/tags/3.15.3/includes/views/ams-home.php#L125
• https://plugins.trac.wordpress.org/browser/appmysite/tags/3.15.3/includes/views/ams-home.php#L222
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3635325%40appmysite&new=3635325%40appmysite
• https://www.wordfence.com/threat-intel/vulnerabilities/id/34c573f4-bc21-4a5f-a44a-779c523c3212?source=cve

Published

Sep 19, 2026

Last Modified

Sep 21, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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