Modx · Modx Revolution · CVE-2018-1000207
**Name of the Vulnerable Software and Affected Versions**
MODX Revolution versions prior to 2.6.5
**Description**
The issue is related to incorrect access control in filtering user parameters before passing them into the phpthumb class, which can result in creating a file with a custom filename and content. This can be exploited via a web request.
**Recommendations**
For MODX Revolution versions prior to 2.6.5, update to version 2.6.5 or later to resolve the issue. As a temporary workaround, consider restricting access to the phpthumb class until a patch is available.