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High severity · published Mar 23, 2026
CVE-2026-3533
JupiterX Core <= 4.14.1 - Authenticated (Subscriber+) Missing Authorization To Limited File Upload via Popup Template Import
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
The Jupiter X Core plugin for WordPress is vulnerable to limited file uploads due to missing authorization on import_popup_templates() function as well as insufficient file type validation in the upload_files() 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+mod_php), or Stored Cross-Site Scripting via .svg, .dfxp, or .xhtml files upload on any server configuration
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JX
Jupiter X Core · artbees
through 4.14.1 · source: vendor
Affected product
JX
Jupiter X Core
artbees
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3533
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3533
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/jupiterx-core/trunk/includes/control-panel-2/includes/class-popup.php?rev=3430169#138
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/jupiterx-core/trunk/includes/extensions/raven/includes/modules/forms/classes/ajax-handler.php?rev=3430169#L434
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/jupiterx-core/trunk/includes/extensions/raven/includes/modules/forms/fields/file.php?rev=3430169#L214
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/70bc5247-525d-4aae-9d66-efd65c9beee3?source=cve
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