WellCMS 2.0 beta3 is vulnerable to File Upload. A user can log in to the CMS background and upload a picture. Because the upload file type is controllable, the user can modify the upload file type to get webshell.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21005
Reference (s):
- http://www.wellcms.cn/read-27.html&&
- https://github.com/Computer2200/-/issues/4