Cross-site scripting (XSS) vulnerability in Jelsoft vBulletin 3.5.4 and 3.6.0 allows remote attackers to inject arbitrary web script or HTML by uploading an attachment with a .pdf extension that contains JavaScript, which is processed as script by Microsoft Internet Explorer 6.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.007
EPSS Ranking 71.3%