CVE-2026-78657 SigmaForms Pro <= 1.4.11 - Unauthenticated Arbitrary File Deletion via Path Traversal in File Upload Field
Unauthenticated attackers can delete arbitrary files via path traversal in SigmaForms Pro, potentially leading to remote code execution.
- 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-2026-78657?
CVE-2026-78657 is a critical path traversal vulnerability in bdthemes SigmaForms Pro – AI Generated Forms, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The SigmaForms Pro – AI Generated Forms plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the delete_submission_files function in all versions up to, and including, 1.4.11. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The malicious path traversal URL is submitted via form upload field and stored in the database, with deletion triggered when an administrator deletes the submission record from the admin panel.
Weakness: CWE-22
Which versions are affected by CVE-2026-78657?
How do I fix CVE-2026-78657?
No fix has been published for CVE-2026-78657 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-2026-78657 being exploited?
There is no known exploitation of CVE-2026-78657 in the wild and no public exploit code.
Sources
Also known as GHSA-jp5p-3g47-qh9c.