MyBB Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2015-8976
Cross-site scripting (XSS) vulnerability in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 might allow remote attackers to inject arbitrary web script or HTML via vectors related to quotold upgrade files.quot