Security Research

Explore CMS v1.1 Reflected XSS: How a Community CMS's UserID Field Became the Attack Entry Point

#Vulnerability Analysis#Code Audit#Web Security#XSS#Reflected XSS#CMS

The user/login.php and admin/login.php endpoints in Explore CMS v1.1 perform zero sanitization or validation on the UserID field — an attacker can trigger reflected XSS with the simplest <script>alert(1)</script> payload, stealing sessions, cookies, and email content. This is especially dangerous for community CMS users.

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