A host header attack vulnerability exists in FUEL CMS 1.5.0 through fuel/modules/fuel/config/fuel_constants.php and fuel/modules/fuel/libraries/Asset.php. An attacker can use a man in the middle attack such as phishing.
In FUEL CMS 11.4.12 and before, the page preview feature allows an anonymous user to take complete ownership of any account including an administrator one.
FUEL CMS 1.4.4 has XSS in the Create Blocks section of the Admin console. This could lead to cookie stealing and other malicious actions. This vulnerability can be exploited with an authenticated account but can also impact unauthenticated visitors.
FUEL CMS 1.4.4 has CSRF in the blocks/create/ Create Blocks section of the Admin console. This could lead to an attacker tricking the administrator into executing arbitrary code via a specially crafted HTML page.
FUEL CMS 1.4.1 allows PHP Code Evaluation via the pages/select/ filter parameter or the preview/ data parameter. This can lead to Pre-Auth Remote Code Execution.
Cross-site request forgery (CSRF) vulnerability in my_profile/edit?inline= in FUEL CMS 1.4 allows remote attackers to change the administrator's password.