CVE-2026-25344: Review Schema Information Disclosure Flaw

CVE-2026-25344 Overview

CVE-2026-25344 is a Sensitive Data Exposure vulnerability affecting the RadiusTheme Review Schema WordPress plugin through version 2.2.6. This vulnerability allows authenticated attackers to retrieve embedded sensitive system information from an unauthorized control sphere, potentially exposing critical configuration data and system details that should remain protected.

Critical Impact

Authenticated attackers can extract sensitive system information from WordPress installations using the Review Schema plugin, potentially leading to further exploitation or reconnaissance activities.

Affected Products

• RadiusTheme Review Schema plugin version 2.2.6 and earlier
• WordPress installations with Review Schema plugin installed
• Sites using Review Schema for structured data and schema markup

Discovery Timeline

• 2026-03-25 - CVE CVE-2026-25344 published to NVD
• 2026-03-26 - Last updated in NVD database

Technical Details for CVE-2026-25344

Vulnerability Analysis

This vulnerability falls under CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere). The Review Schema plugin exposes sensitive system information to users who should not have access to such data. While the vulnerability requires authenticated access, low-privileged users such as subscribers can potentially retrieve sensitive configuration details and embedded system data that could facilitate further attacks against the WordPress installation.

The attack can be executed over the network with low complexity. While confidentiality impact is high due to the sensitive nature of exposed data, there is no direct impact on integrity or availability. The scope remains unchanged, meaning the exploitation is contained within the vulnerable component.

Root Cause

The root cause of this vulnerability stems from insufficient access control validation within the Review Schema plugin. The plugin fails to properly restrict access to sensitive system information, allowing authenticated users with minimal privileges to retrieve data that should only be accessible to administrators. This represents a fundamental flaw in the plugin's authorization logic, where user privilege levels are not properly verified before returning sensitive information.

Attack Vector

The attack vector for CVE-2026-25344 is network-based and requires low-privileged authentication. An attacker with any level of authenticated access to the WordPress site can exploit this vulnerability by making specific requests to the plugin's endpoints that improperly expose system information.

The exploitation mechanism involves accessing plugin functionality that retrieves and returns embedded sensitive data without proper authorization checks. Attackers can leverage this to gather system configuration details, potentially including database information, file paths, server configuration, or other sensitive WordPress installation data.

For detailed technical information about the exploitation method, refer to the Patchstack Vulnerability Report.

Detection Methods for CVE-2026-25344

Indicators of Compromise

• Unusual access patterns to Review Schema plugin endpoints from low-privileged user accounts
• Authentication events followed by suspicious API requests targeting plugin functionality
• Log entries showing repeated queries to plugin-specific endpoints that return configuration data
• Evidence of reconnaissance activity from authenticated but non-administrative users

Detection Strategies

• Monitor WordPress access logs for unusual requests to /wp-json/ endpoints related to the Review Schema plugin
• Implement user behavior analytics to detect subscribers or contributors accessing administrative functions
• Review authentication logs for patterns of low-privileged users making unusual API calls
• Deploy web application firewall (WAF) rules to flag suspicious plugin endpoint access

Monitoring Recommendations

• Enable detailed WordPress logging for plugin-related API endpoints
• Configure alerting for any access to sensitive configuration endpoints from non-admin accounts
• Regularly audit user accounts and their access patterns within the WordPress environment
• Implement session monitoring to track authenticated user activities across plugin interactions

How to Mitigate CVE-2026-25344

Immediate Actions Required

• Update the RadiusTheme Review Schema plugin to a patched version if available
• Review and restrict user roles on WordPress installations using this plugin
• Audit access logs for any indication of prior exploitation
• Consider temporarily disabling the Review Schema plugin until a patch is applied

Patch Information

Check the Patchstack Vulnerability Report for the latest patch availability and update instructions. Organizations should update to a version higher than 2.2.6 once a security fix is released by RadiusTheme.

Workarounds

• Restrict WordPress user registrations and remove unnecessary low-privileged accounts
• Implement additional access controls using security plugins to limit plugin endpoint access
• Use a Web Application Firewall (WAF) to filter suspicious requests targeting the plugin
• Consider disabling the plugin temporarily if it is not critical to site functionality

# WordPress CLI - Disable the Review Schema plugin temporarily
wp plugin deactivate review-schema

# List all users with subscriber role for audit
wp user list --role=subscriber --fields=ID,user_login,user_email

# Check current plugin version
wp plugin get review-schema --field=version