XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting with version 8.3-rc-1 and prior to versions 12.10.3 and 14.0, one can ask for any file located in the classloader using the template API and a path with ".." in it. The issue is patched in versions 14.0 and 13.10.3. There is no easy workaround for this issue.
Add your gear to cvedb and we'll alert you only when xwiki ships something exploited.
Check my exposure →This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.