CVE-2026-104748
Description
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.
Affected WordPress components
-
SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications Plugin · simple-formUp to and including 3.10.0View on WordPress.org
A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.
Affected products and versions
- wpazleen SimpleForm – Form Maker to Chat Apps with Quiz, Poll and Multi Lead Notifications — Up to and including 3.10.0
References
- plugins.svn.wordpress.org https://plugins.svn.wordpress.org/simple-form/trunk/
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Assets.php#L265
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L184
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L291
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/simple-form/tags/3.10.0/app/Integrations/WordPressAuth.php#L32
- plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3726513/simple-form/trunk/app/Integrations/WordPressAuth.php
- www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/b2b973fe-1209-43dc-b2a3-74086b12fe97?source=cve
- nvd.nist.gov Official NVD record