---
id: CVE-2026-104748
title: >-
  The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead
  Notifications plugin for WordPress is vulnerable to Privilege Escalation in
  all versions up to, and including, 3.10.0 This is due to the
  `wp_ajax_nopriv_simpleform_w…
summary: >-
  The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead
  Notifications plugin for WordPress is vulnerable to Privilege Escalation in
  all versions up to, and including, 3.10.0 This is due to the
  `wp_ajax_nopriv_simpleform_w…
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-269
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T08:17:02.997'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-104748'
references:
  - url: 'https://plugins.svn.wordpress.org/simple-form/trunk/'
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Assets.php#L265
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L184
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L291
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L32
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3726513/simple-form/trunk/app/Integrations/WordPressAuth.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/b2b973fe-1209-43dc-b2a3-74086b12fe97?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-10-14T08:23:04.339Z'
---

## Overview

The SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.10.0 This is due to the `wp_ajax_nopriv_simpleform_wp_register` AJAX action lacking any capability check for role assignment and the `save_custom_fields_to_user_meta()` function using an exclusion list that omits `wp_capabilities`, combined with `get_form_settings()` returning a hard-coded defaults array that unconditionally enables meta writing regardless of the supplied `form_id`. This makes it possible for unauthenticated attackers to create a new Administrator-level WordPress account by supplying `wp_capabilities[administrator]=1` alongside standard registration fields. The nonce required by the endpoint is publicly emitted into the `front_end_data` JavaScript object on every front-end page via `wp_enqueue_scripts`, making it trivially obtainable by any unauthenticated visitor before submitting the malicious request.

## Remediation

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