CVE-2025-3906 Overview
CVE-2025-3906 affects the Integração entre Eduzz e Woocommerce plugin for WordPress through version 1.7.5. The vulnerability stems from a missing capability check on the wep_opcoes function. Authenticated attackers holding Subscriber-level access or higher can modify the plugin's default registration role. By changing the registration role to Administrator, any subsequent user registration creates an account with full administrative privileges. This results in complete site compromise from a low-privilege starting point.
Critical Impact
Subscriber-level attackers can escalate to Administrator by altering the plugin's default registration role, granting full control over the WordPress site.
Affected Products
- Integração entre Eduzz e Woocommerce plugin for WordPress
- All versions up to and including 1.7.5
- WordPress sites with the plugin active and open user registration
Discovery Timeline
- 2025-04-26 - CVE-2025-3906 published to NVD
- 2026-04-15 - Last updated in NVD database
Technical Details for CVE-2025-3906
Vulnerability Analysis
The flaw is a missing authorization issue classified as [CWE-862]. The wep_opcoes function in the plugin's admin interface handles option updates without verifying the caller's WordPress capability. Any authenticated user can invoke the function and overwrite plugin settings, including the default user role applied during the Eduzz registration flow. Once the role is set to administrator, the next user created through the plugin's registration handler receives administrator privileges. The vulnerability requires authentication but no user interaction, and the attack is delivered over the network.
Root Cause
The plugin relies on the WordPress admin context to gate sensitive settings but does not call current_user_can() or equivalent capability checks inside wep_opcoes. Authentication alone is treated as authorization. As a result, the function trusts any logged-in user to modify configuration options that control account provisioning. Code references for the affected handlers are available in the WordPress Plugin Code Review and the webhook handler.
Attack Vector
The attacker authenticates with any role at Subscriber or above, including accounts created through open WordPress registration. The attacker then sends a crafted request to the plugin endpoint that invokes wep_opcoes, supplying parameters that set the default registration role to administrator. The attacker triggers the plugin's registration flow to provision a new user, which is created as an administrator. The attacker logs in with the new account and inherits full control of the site. See the Wordfence Vulnerability Analysis for additional technical detail.
Detection Methods for CVE-2025-3906
Indicators of Compromise
- Unexpected administrator accounts in wp_users and wp_usermeta, especially accounts created shortly after Subscriber-level logins.
- Modifications to plugin options where the default registration role has shifted from subscriber or customer to administrator.
- POST requests from low-privilege sessions targeting the plugin's admin-ajax or admin-post endpoints invoking wep_opcoes.
Detection Strategies
- Audit WordPress user lists and the wp_options table for the Eduzz plugin's stored configuration values, comparing against a known-good baseline.
- Inspect web server access logs for requests to admin-ajax or admin-post handlers originating from accounts that should not have administrative reach.
- Correlate new administrator account creation events with prior authenticated requests from Subscriber or Customer accounts.
Monitoring Recommendations
- Forward WordPress audit logs and web server logs to a centralized log analytics platform for continuous review of role changes and user creation events.
- Alert on any change to the WordPress default registration role and on creation of new users with the administrator role.
- Track the installed plugin inventory across WordPress sites and flag versions of the Eduzz plugin at or below 1.7.5.
How to Mitigate CVE-2025-3906
Immediate Actions Required
- Update the Integração entre Eduzz e Woocommerce plugin to a version later than 1.7.5 once the vendor publishes a fixed release.
- Disable open user registration on affected WordPress sites until a patch is applied and verified.
- Review and remove unauthorized administrator accounts, then rotate credentials and session tokens for all remaining administrators.
Patch Information
No fixed version is documented in the available references at this time. Monitor the plugin's WordPress.org repository and the Wordfence advisory for an updated release addressing the missing capability check in wep_opcoes.
Workarounds
- Deactivate the Integração entre Eduzz e Woocommerce plugin until a patched version is installed.
- Restrict access to /wp-admin/admin-ajax.php and /wp-admin/admin-post.php for unauthenticated and low-privilege users at the web application firewall layer.
- Set the WordPress default role to subscriber in wp-config.php and enforce role integrity through a custom plugin or hook that rejects unauthorized role changes.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
