CVE-2026-2022: Smart Forms WordPress Auth Bypass Flaw

CVE-2026-2022 Overview

The Smart Forms plugin for WordPress contains a missing authorization vulnerability (CWE-862) that allows unauthorized data access through an improperly protected AJAX endpoint. Specifically, the rednao_smart_forms_get_campaigns AJAX action fails to implement proper capability checks, enabling authenticated attackers with minimal privileges to access sensitive donation campaign data.

Critical Impact

Authenticated users with only Subscriber-level access can retrieve donation campaign data including campaign IDs and names, potentially exposing sensitive fundraising information.

Affected Products

• Smart Forms plugin for WordPress versions up to and including 2.6.99
• WordPress installations using the Smart Forms plugin with Smart Donations integration
• Any WordPress site with authenticated subscribers using vulnerable plugin versions

Discovery Timeline

• 2026-02-14 - CVE CVE-2026-2022 published to NVD
• 2026-02-18 - Last updated in NVD database

Technical Details for CVE-2026-2022

Vulnerability Analysis

This vulnerability is classified as Missing Authorization (CWE-862), a common WordPress plugin security flaw where privileged functionality is exposed without proper access controls. The affected component is the Smart Donations integration module, specifically the AJAX handler responsible for retrieving donation campaign information.

In WordPress plugin development, AJAX handlers should implement capability checks using functions like current_user_can() to verify that the requesting user has appropriate permissions. The vulnerable code path in Smart Forms fails to perform this check, allowing any authenticated user—including those with only Subscriber-level access—to invoke the rednao_smart_forms_get_campaigns action and retrieve campaign data.

Root Cause

The root cause is a missing capability check in the AJAX handler function registered for the rednao_smart_forms_get_campaigns action. The plugin registers this AJAX endpoint for authenticated users but does not verify that the requesting user has administrative or campaign management privileges before returning campaign data. This oversight in the smart-donations-integration-ajax.php file allows low-privileged users to access data intended only for administrators.

Attack Vector

The attack is executed over the network and requires low-privilege authentication (Subscriber-level account or above). An attacker must first register or compromise a valid WordPress user account on the target site. Once authenticated, the attacker can craft a malicious AJAX request to the rednao_smart_forms_get_campaigns endpoint. The WordPress AJAX handler processes this request without validating user capabilities, returning donation campaign IDs and names in the response.

The exploitation requires no user interaction and can be performed by any authenticated user regardless of their assigned role, as long as they have access to the site's AJAX interface at wp-admin/admin-ajax.php.

Detection Methods for CVE-2026-2022

Indicators of Compromise

• Unusual AJAX requests to admin-ajax.php with action parameter rednao_smart_forms_get_campaigns from low-privileged user accounts
• Multiple campaign data retrieval attempts from subscriber-level accounts in access logs
• Anomalous access patterns to the Smart Forms plugin endpoints from accounts that should not have administrative access

Detection Strategies

• Monitor WordPress AJAX request logs for rednao_smart_forms_get_campaigns action calls from non-administrative users
• Implement web application firewall (WAF) rules to detect and alert on suspicious AJAX endpoint access patterns
• Review WordPress user activity logs for subscribers or contributors accessing donation-related functionality
• Deploy endpoint detection solutions to identify unauthorized data access attempts

Monitoring Recommendations

• Enable detailed WordPress logging for AJAX requests and correlate with user role assignments
• Configure alerts for any rednao_smart_forms_get_campaigns requests from users without administrator or editor roles
• Monitor for bulk data enumeration patterns that may indicate campaign information harvesting
• Implement SentinelOne Singularity platform monitoring for web application anomaly detection

How to Mitigate CVE-2026-2022

Immediate Actions Required

• Update the Smart Forms plugin to a version newer than 2.6.99 that includes the security fix
• Audit access logs to determine if the vulnerability has been exploited prior to patching
• Review WordPress user accounts to identify any suspicious subscriber registrations
• Consider temporarily disabling public user registration if not essential for site operations

Patch Information

Organizations using the Smart Forms plugin should update to the latest version available through the WordPress plugin repository. The vulnerability affects all versions up to and including 2.6.99. Review the WordPress Plugin Code and the Wordfence Vulnerability Report for additional technical details and verification of patch availability.

Workarounds

• Implement a WordPress capability check via a custom plugin or functions.php modification that intercepts the vulnerable AJAX action
• Restrict subscriber account creation and audit existing low-privilege user accounts
• Deploy a web application firewall rule to block unauthorized access to the rednao_smart_forms_get_campaigns AJAX endpoint
• Temporarily disable the Smart Donations integration feature if donation campaign data is sensitive until the patch is applied

# WordPress security hardening - restrict AJAX access to admin users only
# Add to .htaccess to limit admin-ajax.php access (use with caution)
# Note: This is a temporary measure and may affect legitimate plugin functionality

# Monitor access logs for exploitation attempts
grep "rednao_smart_forms_get_campaigns" /var/log/apache2/access.log
grep "action=rednao_smart_forms" /var/log/nginx/access.log