Critical · published June 29, 2026
CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 98.3th percentile for exploit probability.
🚨 An unauthenticated file upload in Joomla's Page Builder CK extension could let attackers waltz in and wreak havoc—uploading whatever they like, including malicious executables! 🔥 Think of it like leaving the back door to your office wide open and letting anyone walk in with a suitcase full of sneaky surprises—total chaos could ensue if they decide to unpack! An attacker could exploit this vulnerability to upload malicious files, potentially gaining complete control over your server and all the sensitive data within—everything from user information to site configurations could be at risk! It’s absolutely devastating, as the full remote code execution (RCE) means they can execute any command they want, leaving your site in ruins.
Think of it like leaving the back door to your office wide open and letting anyone walk in with a suitcase full of sneaky surprises—total chaos could ensue if they decide to unpack! This vulnerability in the Page Builder CK extension before version 3.6.0 permits unauthenticated users to upload arbitrary files, including executable ones, which can lead to full RCE if exploited.
An attacker could exploit this vulnerability to upload malicious files, potentially gaining complete control over your server and all the sensitive data within—everything from user information to site configurations could be at risk! It’s absolutely devastating, as the full remote code execution (RCE) means they can execute any command they want, leaving your site in ruins. To protect yourself, immediately update to Page Builder CK version 3.6.0 or later. Additionally, implement stricter file upload validations—only allow the necessary file types and confirm that uploads are sanitized. Regularly review your security policies to stay proactive. This is fixable! With the right steps, you'll be back in control in no time. 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| joomlack/page_builder_ck | < 3.6.0 | 3.6.0 |