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CVE-2021-28998

Description

File upload vulnerability in CMS Made Simple through 2.2.15 allows remote authenticated attackers to gain a webshell via a crafted phar file.

POC

Reference

- https://github.com/beerpwn/CVE/blob/master/cms_made_simple_2021/file_upload_RCE/File_upload_to_RCE.md

- https://seclists.org/fulldisclosure/2021/Mar/50

Github

No PoCs found on GitHub currently.