CVE-2026-4347 MW WP Form <= 5.1.0 - Unauthenticated Arbitrary File Move via move_temp_file_to_upload_dir
Unauthenticated attackers can move arbitrary files on the server, potentially leading to remote code execution, in the MW WP Form WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4347?
CVE-2026-4347 is a high-severity path traversal vulnerability in inc2734 MW WP Form, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The MW WP Form plugin for WordPress is vulnerable to arbitrary file moving due to insufficient file path validation via the 'generate_user_filepath' function and the 'move_temp_file_to_upload_dir' function in all versions up to, and including, 5.1.0. This makes it possible for unauthenticated attackers to move arbitrary files on the server, which can easily lead to remote code execution when the right file is moved (such as wp-config.php). The vulnerability is only exploitable if a file upload field is added to the form and the “Saving inquiry data in database” option is enabled.
Weakness: CWE-22
Which versions are affected by CVE-2026-4347?
How do I fix CVE-2026-4347?
No fix has been published for CVE-2026-4347 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-4347 being exploited?
There is no known exploitation of CVE-2026-4347 in the wild and no public exploit code.
Sources
Also known as GHSA-2mhf-8wh4-g2p3.