# CVE-2026-75921: Master Addons for Elementor arbitrary file upload

Source: https://junglewise.ai/threats/cve-2026-75921-master-addons-for-elementor-arbitrary-file-upload  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-01. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-75921 · Severity: high · CVSS 7.2 · Published 2026-09-01

Master Addons for Elementor is a widely-used WordPress plugin that adds custom widgets and template functionality to the Elementor page builder. The plugin incorrectly validates file uploads in its template kit feature, allowing editors and above to upload and extract arbitrary files including executable code. This permits remote code execution on the hosting server, potentially compromising the entire WordPress installation and any data it contains.

Technologies: [Master Addons for Elementor](https://junglewise.ai/threats/technologies/master-addons-for-elementor). Vendors: [Master Addons](https://junglewise.ai/threats/vendors/master-addons).

## Quick answers

**Is CVE-2026-75921 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-75921 being exploited in the wild.

**How severe is CVE-2026-75921?** High severity, with a CVSS score of 7.2, published 1 September 2026.

**Which products and versions are affected?** Master Addons for Elementor up to and including 3.1.9.

**Is there a fix for CVE-2026-75921?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-75921 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-75921?** Check whether you run Master Addons for Elementor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an arbitrary file upload flaw in the upload_template_kit AJAX handler. The root cause is a combination of insufficient authorization checks (requiring only upload_files instead of manage_options capability) and missing file-type filtering after ZIP extraction. An authenticated attacker with editor-level access can exploit this by crafting a malicious ZIP file; the nonce requirement is bypassable because the WordPress Pages list screen (accessible to editors) localizes the necessary nonces. The attack does not require elevated privileges beyond the standard editor role, and results in remote code execution on the server. The vulnerability affects all versions through 3.1.9, with patches expected in later releases.

## Affected products

- Master Addons Master Addons for Elementor up to and including 3.1.9

## Timeline

- 2026-09-01: disclosed

## References

- [https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.8/inc/admin/page-importer.php](https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.8/inc/admin/page-importer.php)
- [https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.8/inc/admin/templates/kits/class-importer.php](https://plugins.trac.wordpress.org/browser/master-addons/tags/3.1.8/inc/admin/templates/kits/class-importer.php)

## Related threats

- [Master Addons For Elementor Stored XSS in jtlma_custom_js](https://junglewise.ai/threats/cve-2026-9281-master-addons-for-elementor-stored-xss-in-jtlma-custom-js)