CVE-2020-12255

rConfig 3.9.4 is vulnerable to remote code execution due to improper validation in the file upload functionality. vendor.crud.php accepts a file upload by checking content-type without considering the file extension and header. Thus, an attacker can exploit this by uploading a .php file to vendor.php that contains arbitrary PHP code and changing the content-type to image/gif.

• CWE-434

• https://gist.github.com/farid007/9f6ad063645d5b1550298c8b9ae953ffThird Party Advisory
• https://gist.github.com/farid007/9f6ad063645d5b1550298c8b9ae953ffThird Party Advisory

Published

May 18, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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