XSS in the usermacros resource through the description of a macro - CVE-2017-18084

The usermacros resource in Atlassian Confluence Server before version 6.3.4 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting XSS vulnerability through the description of a macro. Acknowledgements Atlassian would like to credit Veit Hailperin @fenceposterro...