Cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server 2010 SP1, Groove Server 2010 SP1, SharePoint Foundation 2010 SP1, and Office Web Apps 2010 SP1 allows remote attackers to inject arbitrary web script or HTML via a crafted string, aka "HTML Sanitization Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A16599
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-035