CVE-2026-19222 Overview
CVE-2026-19222 affects the Forminator Forms WordPress plugin in versions before 1.57.0.7. The plugin does not consistently enforce role restrictions applied to registration forms. Form builders can configure a registration form that assigns the administrator role to any visitor who registers through it. This weakness maps to improper privilege management [CWE-269] and enables privilege escalation from a lower-privileged form-building user to full site administrator.
Critical Impact
A user with form-building permissions can craft a registration form that grants administrator privileges to arbitrary registrants, leading to complete WordPress site takeover.
Affected Products
- Forminator Forms WordPress plugin versions prior to 1.57.0.7
- WordPress sites where form-builder roles are delegated to non-administrator users
- WordPress installations exposing Forminator registration forms to public visitors
Discovery Timeline
- 2026-08-22 - CVE-2026-19222 published to NVD
- 2026-08-26 - Last updated in NVD database
Technical Details for CVE-2026-19222
Vulnerability Analysis
Forminator Forms allows site operators to build registration forms that assign a WordPress role to newly registered users. The plugin implements a restriction intended to prevent form builders from assigning the administrator role through these forms. That restriction is not consistently enforced across all code paths that persist the form configuration.
A user permitted to build forms can craft or modify a registration form so that the role assignment step outputs administrator. When a visitor submits the form, the plugin creates the account and assigns administrator privileges. The attacker then authenticates as that new user and inherits full control of the WordPress instance, including plugin installation, PHP execution through theme edits, and database access.
Exploitation requires an authenticated actor with form-building capability, which raises attack complexity. However, the impact once the misconfigured form is published is total compromise of confidentiality, integrity, and availability.
Root Cause
The root cause is inconsistent server-side validation of the role field on registration form configurations. The plugin trusts the submitted role value on at least one save path without re-checking the current user's capability to grant that role. This is a classic improper privilege management flaw [CWE-269].
Attack Vector
The attack vector is network-based and multi-stage. The privileged form builder saves a registration form specifying the administrator role, then a low-privileged or unauthenticated visitor submits that form. The registration handler creates the account with administrator privileges and the attacker logs in. No memory corruption, injection, or client-side interaction is required.
No verified public exploitation code is available. Technical detail is documented in the WPScan Vulnerability Report.
Detection Methods for CVE-2026-19222
Indicators of Compromise
- New WordPress user accounts with the administrator role created shortly after a Forminator registration form submission.
- Forminator form configurations in wp_postmeta or plugin storage where the user_role field is set to administrator.
- Unexpected changes to wp_users and wp_usermeta originating from the Forminator submission endpoint.
- Login activity from newly created administrator accounts followed by plugin, theme, or wp-config.php modifications.
Detection Strategies
- Audit all Forminator registration form definitions and flag any form assigning a privileged role.
- Compare the current administrator user list against a known-good baseline and investigate additions.
- Review web server logs for POST requests to Forminator submission endpoints followed by immediate authenticated administrator sessions from the same source IP.
Monitoring Recommendations
- Alert on any WordPress role change event where the target role is administrator.
- Monitor plugin, theme, and wp-config.php file writes performed by recently created accounts.
- Track outbound requests from the web host that follow new administrator logins, which often indicate webshell staging.
How to Mitigate CVE-2026-19222
Immediate Actions Required
- Upgrade the Forminator Forms plugin to version 1.57.0.7 or later on every WordPress site.
- Enumerate existing administrator accounts and remove any that cannot be attributed to a legitimate operator.
- Review all Forminator registration forms and reset the assigned role to subscriber or another non-privileged role.
- Rotate credentials and secrets for any site where an unexplained administrator account was found.
Patch Information
The vendor fixed the inconsistent role restriction enforcement in Forminator Forms 1.57.0.7. Upgrade through the WordPress plugin updater or by replacing the plugin directory with the patched release. Reference: WPScan Vulnerability Report.
Workarounds
- Restrict form-building capabilities to trusted administrator accounts until the patch is applied.
- Disable or unpublish any Forminator registration forms that are not strictly required.
- Enforce a WordPress-level filter that rejects role assignments of administrator from any registration handler other than a vetted allowlist.
# Verify Forminator plugin version on a WordPress host
wp plugin get forminator --field=version
# Upgrade to the patched release
wp plugin update forminator --version=1.57.0.7
# List all administrator accounts for review
wp user list --role=administrator --fields=ID,user_login,user_email,user_registered
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
