Cross-site scripting (XSS) vulnerability in inc-core-admin-editor-previouscolorsjs.php in the FlexCMS 2.5 and earlier, when register_globals is enabled, allows remote attackers to inject arbitrary web script or HTML via the PreviousColorsString parameter.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.018
EPSS Ranking 82.2%