FlatCore Flaw: CSRF Vulnerability Lets Hackers Upload PHP Files – Is Your Site at Risk?
FlatCore versions below 1.5 have a CSRF vulnerability allowing arbitrary .php file uploads. Just when you thought uploading cat pictures was risky enough! Stay secure and update your software to prevent unexpected server guests.

Hot Take:
Well, well, well, looks like flatCore is flatter than a pancake when it comes to security! This CSRF vulnerability is like leaving your front door wide open with a sign that says “Please, come in and make yourself at home!” If you’ve ever wanted to upload a .php file and wreak havoc, flatCore < 1.5 is your playground.
Key Points:
- flatCore CMS versions below 1.5 are vulnerable to CSRF attacks.
- The vulnerability allows arbitrary .php file uploads, which could lead to serious security breaches.
- Exploit involves uploading a file via the files.upload-script.php endpoint.
- The vulnerability has been documented under CVE-2019-13961.
- This flaw was demonstrated in a Proof of Concept (PoC) by CodeSecLab.
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