---
id: CVE-2026-14494
title: >-
  The Sigma Forms Pro plugin for WordPress is vulnerable to Remote Code
  Execution in all versions up to, and including, 1.4.5 via the
  handle_form_submission function
summary: >-
  The Sigma Forms Pro plugin for WordPress is vulnerable to Remote Code
  Execution in all versions up to, and including, 1.4.5 via the
  handle_form_submission function. This is due to the plugin dynamically
  granting the unfiltered_upload cap…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-434
published: '2026-08-29'
updated: '2026-08-29'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14494'
references:
  - url: 'https://feedback.bdthemes.com/announcements'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/44d63454-87f0-49e3-ac04-2fa83882500d?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-08-30T07:49:08.299Z'
epss: 0.00693
epssPercentile: 0.50795
---

## Overview

The Sigma Forms Pro plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1.4.5 via the handle_form_submission function. This is due to the plugin dynamically granting the unfiltered_upload capability to all users during form submissions and bypassing MIME type validation when allowed_file_types is not configured. This makes it possible for unauthenticated attackers to execute code on the server. Several default pre-built templates including Job Application, Support Ticket, and Wholesale Application have file upload fields with no file type restrictions configured by design, making this vulnerability immediately exploitable upon installation.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.