SigmaForms Pro permits unauthenticated arbitrary file deletion

SigmaForms Pro through 1.4.11 accepts a path-traversal value through a public form upload field and stores it with the submission. When an administrator later deletes that submission, delete_submission_files() uses the stored path without adequate validation and can delete an arbitrary server file. Deleting a critical file such as wp-config.php can lead to site compromise or remote code execution.

CVE / CNA score 9.8 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: SigmaForms Pro – AI Generated Forms
Plugin slug: sigmaforms-pro
Affected: <= 1.4.11
Safe version: See mitigation notes
Published: Sep 02, 2026
Weakness: CWE-22 — Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

This CVE was published Sep 02, 2026 and is one of 3 known issues for this plugin.

What to do

Update, patch or deactivate.

Update to a confirmed release newer than 1.4.11 when available. Until then, disable public file uploads or remove the plugin when warranted, inspect stored submission paths, and verify critical WordPress files.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources

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