XMB Forum 1.9.12.06 Persistent Cross-Site Scripting via Admin Templates

XMB Forum 1.9.12.06 contains a persistent cross-site scripting vulnerability that allows authenticated administrators to inject malicious JavaScript into templates and front page settings. Attackers can insert XSS payloads in footer templates and news ticker fields, enabling script execution for all forum users when pages are rendered.

XMB is vulnerable to cross-site scripting (XSS) due to inadequate filtering of BBCode input. This bug affects all versions of XMB. All XMB installations must be updated to versions 1.9.12.03 or 1.9.11.16.