Description
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Simple users can create global SSX/JSX without specific rights: in theory only users with Programming Rights should be allowed to create SSX or JSX that are executed everywhere on a wiki. But a bug allow anyone with edit rights to actually create those. This issue has been patched in XWiki 13.10-rc-1, 12.10.11 and 13.4.6. There's no easy workaround for this issue, administrators should upgrade their wiki.
Remediation
References
Related Vulnerabilities
WordPress 4.9.x PHP Object Injection (4.9 - 4.9.17)
WordPress Plugin WP REST API (WP API) Cross-Site Scripting (1.2.2)
PHP Missing Release of Resource after Effective Lifetime Vulnerability (CVE-2010-4657)
WordPress Plugin My Tickets Cross-Site Scripting (1.8.30)
Jenkins Permissions, Privileges, and Access Controls Vulnerability (CVE-2016-0788)