Cross-site scripting (XSS) vulnerability in Microsoft SharePoint Server 2010 SP1 and SP2 and 2013 allows remote attackers to inject arbitrary web script or HTML via a crafted POST request, aka "POST XSS Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19136
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-067