Jupiter X Core <= 4.8.7 - Authenticated (Contributor+) SVG Upload to Local File Inclusion (Remote Code Execution)

The Jupiter X Core plugin for WordPress is vulnerable to Local File Inclusion to Remote Code Execution in all versions up to, and including, 4.8.7 via the get_svg() function. This makes it possible for authenticated attackers, with Contributor-level access and above, to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution. In this specific case, an attacker can create a form that allows SVG uploads, upload an SVG file with malicious content and then include the SVG file in a post to achieve remote code execution. This means it is relatively easy to gain remote code execution as a contributor-level user and above by default.

An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Jupiter X Core 4.8.8 closes this, and updating the plugin is the step that ends it.

• Firewall
• Scanner
• Alerts