CVE-2025-7710: WordPress Brave Conversion Engine Plugin

CVE-2025-7710 Overview

The Brave Conversion Engine (PRO) plugin for WordPress contains a critical authentication bypass vulnerability affecting all versions up to and including 0.7.7. The vulnerability stems from improper identity validation during Facebook OAuth authentication, allowing unauthenticated attackers to impersonate any user on the WordPress site, including administrators.

Critical Impact

Unauthenticated attackers can bypass authentication and log in as any user, including administrators, leading to complete site compromise.

Affected Products

• Brave Conversion Engine (PRO) WordPress plugin versions up to and including 0.7.7
• WordPress sites with Facebook login functionality enabled via this plugin
• All WordPress installations using the vulnerable plugin regardless of WordPress core version

Discovery Timeline

• 2025-08-02 - CVE-2025-7710 published to NVD
• 2025-08-04 - Last updated in NVD database

Technical Details for CVE-2025-7710

Vulnerability Analysis

This authentication bypass vulnerability (CWE-288: Authentication Bypass Using an Alternate Path or Channel) occurs because the Brave Conversion Engine (PRO) plugin fails to properly validate claimed identities during Facebook OAuth authentication flows. When a user attempts to authenticate using Facebook login, the plugin does not adequately verify that the identity claimed in the authentication request actually belongs to the authenticating user.

The flaw allows an attacker to craft malicious authentication requests that claim to be a different user—including site administrators. Since the plugin does not properly verify the claimed identity against the actual Facebook authentication response, attackers can successfully authenticate as any user account that has previously used Facebook login on the target site.

Root Cause

The root cause lies in improper handling of the Facebook OAuth response during the authentication process. The plugin accepts user identity claims without properly validating them against the authentication provider's verified response data. This is classified under CWE-288 (Authentication Bypass Using an Alternate Path or Channel), indicating that the plugin provides an alternate authentication path that bypasses proper identity verification controls.

Attack Vector

The vulnerability is network-exploitable and requires no authentication or user interaction. An attacker can target any WordPress site running the vulnerable plugin with Facebook login enabled. The attack involves manipulating the authentication flow to claim a different user identity than what was actually authenticated through Facebook.

The attacker would typically:

1. Identify a target WordPress site using the Brave Conversion Engine (PRO) plugin
2. Initiate a Facebook login flow
3. Manipulate the authentication request or response to claim a different user identity
4. Gain access to the victim's account, including administrator accounts

Since this vulnerability requires no privileges and can be exploited remotely over the network, any public-facing WordPress site with this plugin installed is at risk of complete account takeover.

Detection Methods for CVE-2025-7710

Indicators of Compromise

• Unexpected administrator login events, particularly those associated with Facebook OAuth
• Multiple login events from different user accounts originating from the same IP address
• User reports of unauthorized access to their WordPress accounts
• Anomalous authentication patterns in WordPress access logs, especially around OAuth callbacks

Detection Strategies

• Monitor WordPress authentication logs for unusual login patterns via Facebook OAuth
• Implement alerting for administrator account logins from unexpected geographic locations or IP addresses
• Review audit logs for privilege changes or content modifications following suspicious login events
• Deploy Web Application Firewall (WAF) rules to detect manipulation of OAuth authentication parameters

Monitoring Recommendations

• Enable comprehensive logging for all WordPress authentication events
• Implement real-time alerting for administrator account access via social login methods
• Monitor for multiple failed or successful authentication attempts targeting different user accounts from single sources
• Review plugin activity logs for any signs of authentication anomalies

How to Mitigate CVE-2025-7710

Immediate Actions Required

• Update the Brave Conversion Engine (PRO) plugin to the latest patched version immediately
• Temporarily disable Facebook login functionality until the update is applied
• Audit recent login activity for signs of compromise or unauthorized access
• Force password resets for all administrator accounts as a precautionary measure

Patch Information

The vendor has released a patch addressing this authentication bypass vulnerability. Detailed changelog information is available at the Brave Pro Changelog. Site administrators should update to a version newer than 0.7.7 to remediate this vulnerability. Additional technical details about this vulnerability can be found in the Wordfence Vulnerability Report.

Workarounds

• Disable Facebook login functionality in the plugin settings until a patch can be applied
• Remove the Brave Conversion Engine (PRO) plugin entirely if it is not critical to site functionality
• Implement additional access controls such as IP allowlisting for administrator accounts
• Enable multi-factor authentication for all WordPress administrator accounts to add a secondary authentication layer

# Disable the plugin via WP-CLI (if available)
wp plugin deactivate brave-conversion-engine-pro

# Alternatively, remove the plugin directory to completely disable
mv wp-content/plugins/brave-conversion-engine-pro wp-content/plugins/brave-conversion-engine-pro.disabled