The mdempfle Advanced iFrame plugin suffers from a DOM-based cross-site scripting vulnerability caused by improper input neutralization during web page generation. This allows an attacker to inject malicious scripts that execute in the context of the victim's browser. The affected versions include all versions up to 2025.10. The CVSS v3.1 base score is 6.5, reflecting network attack vector, low attack complexity, low privileges required, and user interaction needed, with impacts on confidentiality, integrity, and availability.

Successful exploitation can lead to partial compromise of confidentiality, integrity, and availability of the affected system or user data through execution of arbitrary scripts in the victim's browser context. This may allow theft of sensitive information, session hijacking, or other malicious actions within the scope of the affected web application.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with this plugin and consider disabling or restricting its use to trusted users only. Monitor vendor channels for updates and apply patches promptly once released.