CVE-2026-3533: JupiterX Core <= 4.14.1 - Authenticated (Subscriber+) Missing Authorization To Limited File Upload via Popup Template Import
The Jupiter X Core plugin for WordPress is vulnerable to limited file uploads due to missing authorization on importpopuptemplates() function as well as insufficient file type validation in the uploadfiles() function in all versions up to, and including, 4.14.1. This makes it possible for Authenticated attackers with Subscriber-level access and above, to upload files with dangerous types that can lead to Remote Code Execution on servers configured to handle .phar files as executable PHP (e.g., Apache+modphp), or Stored Cross-Site Scripting via .svg, .dfxp, or .xhtml files upload on any server configuration
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3533?
CVE-2026-3533 is considered a high severity vulnerability due to the risk of unauthorized file uploads.
How do I fix CVE-2026-3533?
To fix CVE-2026-3533, update the Jupiter X Core plugin to the latest version available beyond 4.14.1.
What systems are affected by CVE-2026-3533?
CVE-2026-3533 affects the Jupiter X Core plugin for WordPress versions up to and including 4.14.1.
Is exploitation of CVE-2026-3533 easy?
Exploitation of CVE-2026-3533 is relatively easy for an authenticated user with subscriber permissions, which poses a significant risk.
What type of vulnerability is CVE-2026-3533?
CVE-2026-3533 is a missing authorization vulnerability that allows limited file upload capabilities.