CVE-2026-24562: Ryviu WooCommerce Auth Bypass Flaw

CVE-2026-24562 Overview

CVE-2026-24562 is a Missing Authorization vulnerability affecting the Ryviu – Product Reviews for WooCommerce WordPress plugin. This Broken Access Control flaw allows attackers to exploit incorrectly configured access control security levels, potentially enabling unauthorized actions on affected WooCommerce sites without proper permission checks.

Critical Impact

Unauthorized users can bypass access control mechanisms to perform actions that should require proper authorization, potentially compromising the integrity of product review data on WooCommerce stores.

Affected Products

• Ryviu – Product Reviews for WooCommerce plugin versions up to and including 3.1.26
• WordPress sites running vulnerable versions of the Ryviu plugin
• WooCommerce stores utilizing Ryviu for product review management

Discovery Timeline

• 2026-01-23 - CVE-2026-24562 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2026-24562

Vulnerability Analysis

This vulnerability falls under CWE-862 (Missing Authorization), which occurs when an application does not perform proper authorization checks before allowing a user to access a resource or perform an action. In the context of the Ryviu plugin, certain functionality lacks adequate permission verification, allowing unauthenticated or low-privileged users to execute operations that should be restricted to administrators or authorized users only.

The vulnerability can be exploited remotely over the network without requiring authentication or user interaction. While the impact on confidentiality and availability is minimal, the integrity of the affected system can be compromised as attackers may be able to modify data or settings through unauthorized access.

Root Cause

The root cause of this vulnerability is the absence of proper authorization checks in one or more plugin functions. WordPress plugins typically should implement capability checks using functions like current_user_can() to verify that the current user has appropriate permissions before executing sensitive operations. The Ryviu plugin fails to implement these checks in certain areas, leaving access control security levels incorrectly configured.

Attack Vector

The attack vector for this vulnerability is network-based with low complexity. An attacker can exploit this vulnerability by sending crafted requests to the vulnerable plugin endpoints without proper authentication. Since no user interaction is required, attackers can directly target vulnerable WordPress installations running the affected Ryviu plugin versions.

Exploitation involves identifying the unprotected plugin functionality and sending HTTP requests to the corresponding WordPress AJAX handlers or REST API endpoints without proper nonce verification or capability checks. This allows unauthorized manipulation of plugin settings or review data.

Detection Methods for CVE-2026-24562

Indicators of Compromise

• Unexpected modifications to product reviews or review settings without corresponding administrator activity
• Suspicious AJAX requests to Ryviu plugin endpoints from unauthenticated sources
• Anomalous HTTP POST requests targeting /wp-admin/admin-ajax.php with Ryviu-related actions
• Log entries showing plugin functionality access from unauthorized IP addresses

Detection Strategies

• Monitor WordPress access logs for unusual requests to Ryviu plugin endpoints
• Implement Web Application Firewall (WAF) rules to detect and block suspicious plugin-related requests
• Review WordPress audit logs for unauthorized changes to WooCommerce review configurations
• Deploy SentinelOne Singularity Platform to detect anomalous behavior patterns on WordPress servers

Monitoring Recommendations

• Enable detailed logging for all WordPress AJAX and REST API requests
• Configure alerts for failed authorization attempts and unusual plugin activity
• Regularly audit product review data for unauthorized modifications
• Monitor for mass requests targeting plugin endpoints that could indicate automated exploitation

How to Mitigate CVE-2026-24562

Immediate Actions Required

• Update the Ryviu – Product Reviews for WooCommerce plugin to a version newer than 3.1.26 when available
• Review and audit all product reviews and plugin settings for unauthorized changes
• Implement additional access control measures at the web server or WAF level
• Consider temporarily disabling the plugin if a patch is not available and the functionality is not critical

Patch Information

According to the Patchstack security advisory, the vulnerability affects Ryviu – Product Reviews for WooCommerce versions through 3.1.26. Site administrators should check for plugin updates through the WordPress admin dashboard and apply any available security patches immediately.

Workarounds

• Implement server-level access restrictions to limit who can access WordPress admin AJAX endpoints
• Use a WordPress security plugin to add additional authorization checks and monitoring
• Configure your WAF to block requests to Ryviu-specific AJAX actions from unauthenticated users
• Restrict access to the WordPress admin area by IP address where feasible

# Example .htaccess restriction for wp-admin access
<Files admin-ajax.php>
    <RequireAll>
        Require all granted
    </RequireAll>
</Files>

# Consider implementing rate limiting for AJAX requests
# Add to your web server configuration
<IfModule mod_ratelimit.c>
    <Location "/wp-admin/admin-ajax.php">
        SetOutputFilter RATE_LIMIT
        SetEnv rate-limit 10
    </SetEnv>
    </Location>
</IfModule>