GetSimpleCMS RCE Alert: PHAR Files Strike Again!

GetSimpleCMS versions below 3.3.16 have a hilarious yet serious vulnerability. By uploading a sneaky PHAR file via admin/upload.php, cyber tricksters can execute remote code. The original patch missed PHAR files, offering a backdoor for mischief. Remember, no one expects a .phar-inquisition!

1P
Published: April 11, 2025 4:54 amAdded: April 10, 2025 at 10:35 pmAssembled by: The Editor
Pro Dashboard

Hot Take:

Well, well, well, someone left the backdoor open again, and it’s not Santa making an early delivery. GetSimpleCMS users, it’s time to put on your metaphorical hard hats because there’s a new RCE exploit in town, and it’s strutting its stuff like it owns the place. Who knew uploading a file could feel like defusing a bomb?

Key Points:

  • A critical Remote Code Execution vulnerability in GetSimpleCMS version 3.3.16 has been disclosed.
  • The exploit leverages a PHAR file upload via the admin/upload.php script.
  • The vulnerability arises due to insufficient filtering of file types, particularly PHAR files.
  • Attackers can execute arbitrary code on the server by crafting a PHAR archive.
  • Affected users are advised to apply patches or upgrade their systems promptly.

Membership Required

 You must be a member to access this content.

View Membership Levels
Already a member? Log in here
The Nimble Nerd
powered by the NSA, er,  GDPR Cookie Compliance
Confessional Booth of Our Digital Sins

Okay, deep breath, let's get this over with. In the grand act of digital self-sabotage, we've littered this site with cookies. Yep, we did that. Why? So your highness can have a 'premium' experience or whatever. These traitorous cookies hide in your browser, eagerly waiting to welcome you back like a guilty dog that's just chewed your favorite shoe. And, if that's not enough, they also tattle on which parts of our sad little corner of the web you obsess over. Feels dirty, doesn't it?