CVE-2025-6461: CubeWP Plugin Information Disclosure Flaw

CVE-2025-6461 Overview

The CubeWP – All-in-One Dynamic Content Framework plugin for WordPress contains an Information Exposure vulnerability in all versions up to, and including, 1.1.27. The vulnerability exists in the search functionality within class-cubewp-search-ajax-hooks.php due to insufficient restrictions on which posts can be included in search results. This flaw allows unauthenticated attackers to extract sensitive data from password-protected, private, or draft posts that should not be publicly accessible.

Critical Impact

Unauthenticated attackers can access protected content including password-protected posts, private posts, and draft posts through the plugin's search feature, potentially exposing sensitive information intended to be restricted.

Affected Products

• CubeWP – All-in-One Dynamic Content Framework plugin for WordPress versions up to and including 1.1.27
• WordPress installations using vulnerable CubeWP plugin versions
• Websites with password-protected or private content managed through CubeWP

Discovery Timeline

• 2026-01-25 - CVE CVE-2025-6461 published to NVD
• 2026-01-26 - Last updated in NVD database

Technical Details for CVE-2025-6461

Vulnerability Analysis

This vulnerability is classified as Information Exposure (CWE-200), affecting the search module of the CubeWP WordPress plugin. The core issue resides in the class-cubewp-search-ajax-hooks.php file, which handles AJAX-based search requests. When processing search queries, the plugin fails to properly verify the access permissions for posts before including them in search results.

WordPress maintains post status classifications such as 'publish', 'private', 'draft', and 'password-protected' to control content visibility. The vulnerable search implementation does not adequately filter query results based on these post statuses, allowing search operations to return content that should be restricted to authorized users or remain unpublished.

The vulnerability can be exploited remotely over the network without requiring any authentication, though the impact is limited to confidentiality exposure without affecting system integrity or availability. An attacker could systematically query the search endpoint to enumerate and extract content from protected posts.

Root Cause

The root cause of this vulnerability lies in insufficient access control validation within the CubeWP search AJAX handler. The class-cubewp-search-ajax-hooks.php file processes search requests without implementing proper post status filtering, failing to exclude posts with restricted visibility statuses from the search results. This oversight allows the search functionality to bypass WordPress's built-in content protection mechanisms.

Attack Vector

The attack vector is network-based, requiring no user interaction or authentication. An attacker can exploit this vulnerability by sending crafted search requests to the WordPress site's AJAX endpoint. The search functionality processes these requests and returns results that may include content from password-protected, private, or draft posts.

The exploitation technique involves:

1. Identifying WordPress sites running vulnerable versions of the CubeWP plugin
2. Sending search queries through the AJAX search endpoint
3. Analyzing returned results for content from protected post types
4. Iterating with different search terms to extract additional protected content

For technical details on the vulnerability and the applied fix, refer to the WordPress Plugin Change Log and the Wordfence Vulnerability Report.

Detection Methods for CVE-2025-6461

Indicators of Compromise

• Unusual or repeated AJAX search requests targeting /wp-admin/admin-ajax.php with CubeWP search actions
• Search queries returning content from posts with non-public statuses in server logs
• Elevated search API traffic from single IP addresses or suspicious user agents
• Access logs showing requests to draft or private post URLs that were not directly linked

Detection Strategies

• Monitor WordPress AJAX endpoint logs for abnormal search request patterns targeting CubeWP search hooks
• Implement Web Application Firewall (WAF) rules to detect enumeration attempts against the search functionality
• Review access logs for requests that correlate with protected post content exposure
• Enable WordPress debug logging temporarily to audit search query behavior and result filtering

Monitoring Recommendations

• Configure real-time alerting for high-volume search requests from unauthenticated sources
• Audit the CubeWP plugin version across all WordPress deployments to identify vulnerable installations
• Monitor for data exfiltration patterns where search results are systematically queried
• Review server access logs for unusual patterns in admin-ajax.php requests with CubeWP-related action parameters

How to Mitigate CVE-2025-6461

Immediate Actions Required

• Update the CubeWP – All-in-One Dynamic Content Framework plugin to the latest patched version immediately
• Review and audit any sensitive content stored in password-protected, private, or draft posts for potential exposure
• Implement WAF rules to restrict or monitor access to the vulnerable search endpoint until patching is complete
• Consider temporarily disabling the CubeWP search functionality if immediate patching is not feasible

Patch Information

The vulnerability has been addressed in the CubeWP plugin. Administrators should update to the latest version available through the WordPress plugin repository. The specific fix can be reviewed in the WordPress Plugin Change Log, which shows the modifications made to class-cubewp-search-ajax-hooks.php to implement proper post status filtering.

Workarounds

• Disable the CubeWP AJAX search functionality by removing or restricting the related AJAX hooks until patching is complete
• Implement server-level access controls to restrict unauthenticated access to WordPress AJAX endpoints
• Move sensitive content to alternative storage mechanisms not indexed by the CubeWP search feature
• Use a Web Application Firewall to filter requests containing CubeWP search-related action parameters from unauthenticated users

# Configuration example - Restrict AJAX search access via .htaccess (Apache)
# Add to WordPress root .htaccess to limit admin-ajax.php access
<Files admin-ajax.php>
    <RequireAll>
        Require all granted
        # Optionally restrict access patterns here
    </RequireAll>
</Files>

# Alternative: Use WordPress plugin to disable AJAX search temporarily
# or deactivate CubeWP until patched version is installed