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

> Unauthenticated attackers can upload executable files via a bypassed MIME check, leading to remote code execution on WordPress sites using this plugin.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Sep 2026
- **Updated:** 10 Sep 2026
- **Also known as:** GHSA-fh47-jv9w-x723

## What is CVE-2026-18351?

CVE-2026-18351 is a critical vulnerability in addonsorg Drag and Drop File Upload for Elementor Forms, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2026-18351?


## How do I fix CVE-2026-18351?

No fix has been published for CVE-2026-18351 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-18351 being exploited?

There is no known exploitation of CVE-2026-18351 in the wild and no public exploit code.

Public exploit code:

- CVE-2026-18351 — Drag and Drop File Upload for Elementor Forms <= 1.6.0 Unauthenticated Arbitrary File Upload -> RCE (github_poc): https://github.com/JohenLastGen-JLG/CVE-2026-18351
- Drag and Drop File Upload for Elementor Forms - Unauthenticated Arbitrary File Upload to RCE.🔥 (github_poc): https://github.com/ChiefYoru/Exploit-CVE-2026-18351

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-18351 and fix it if it is affected.

What it is: CVE-2026-18351 is a critical vulnerability in addonsorg Drag and Drop File Upload for Elementor Forms, published on 10 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-18351 in the wild and no public exploit code.

Affected product: addonsorg Drag and Drop File Upload for Elementor Forms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-18351/ (Markdown: https://insights.sbomify.com/CVE-2026-18351/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-18351
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-18351
- OSV: https://osv.dev/vulnerability/CVE-2026-18351

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-18351/
Summaries are generated and may contain mistakes; the official description above is the record.