vBulletin is an open source web forum program based on PHP and MySQL by InternetBrands and vBulletinSolutions in the United States. vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request. This rule supports to defend the A6: Vulnerable and Outdated Components of OWASP Top 10 - 2021. Other reference:None