CVE-2025-67913: Aruba HiSpeed Cache Auth Bypass Flaw

CVE-2025-67913 Overview

A Missing Authorization vulnerability has been identified in the Aruba HiSpeed Cache WordPress plugin developed by Aruba.it Dev. This broken access control flaw allows attackers to access functionality not properly constrained by Access Control Lists (ACLs), potentially enabling unauthorized actions within the affected WordPress installations.

Critical Impact

Unauthenticated attackers can bypass authorization controls and access restricted plugin functionality, potentially compromising WordPress site integrity, confidentiality, and availability.

Affected Products

• Aruba HiSpeed Cache WordPress Plugin versions prior to 3.0.3
• WordPress installations using vulnerable versions of aruba-hispeed-cache

Discovery Timeline

• January 8, 2026 - CVE-2025-67913 published to NVD
• January 8, 2026 - Last updated in NVD database

Technical Details for CVE-2025-67913

Vulnerability Analysis

This vulnerability falls under CWE-862 (Missing Authorization), a critical security weakness where the application fails to perform proper authorization checks before allowing access to restricted functionality. In the context of WordPress plugins, this typically means that certain AJAX endpoints, administrative functions, or cache management features can be accessed without verifying the user's permissions.

The Aruba HiSpeed Cache plugin, designed to improve WordPress site performance through caching mechanisms, exposes functionality that should be restricted to authenticated administrators. Without proper authorization gates, any user—including unauthenticated visitors—can potentially invoke sensitive cache operations or access configuration settings that could impact site availability and data integrity.

Root Cause

The root cause of this vulnerability is the absence of proper authorization checks in the plugin's codebase. WordPress provides several mechanisms for authorization including current_user_can() capability checks and nonce verification. When these checks are missing or improperly implemented, protected functionality becomes accessible to unauthorized users.

Specifically, the plugin fails to validate whether the requesting user has the appropriate WordPress capabilities (such as manage_options or similar administrative permissions) before executing sensitive operations. This oversight allows ACL bypass attacks where attackers can directly call plugin functions without the required privileges.

Attack Vector

The vulnerability is exploitable over the network without requiring authentication or user interaction. An attacker can craft HTTP requests directly to vulnerable plugin endpoints to access functionality that should be restricted to administrators only.

The attack surface includes:

• Direct requests to plugin AJAX handlers
• Manipulation of cache purge or invalidation functions
• Potential access to configuration modification endpoints
• Possible information disclosure through unprotected data retrieval functions

Exploitation typically involves identifying unprotected WordPress AJAX actions registered by the plugin and sending crafted requests to wp-admin/admin-ajax.php with the appropriate action parameter. Since authorization checks are missing, these requests succeed regardless of the user's authentication state.

Detection Methods for CVE-2025-67913

Indicators of Compromise

• Unusual AJAX requests to WordPress admin endpoints from unauthenticated sessions
• Unexpected cache purge or invalidation events in server logs
• Plugin configuration changes without corresponding administrator activity
• Access to admin-ajax.php with aruba-hispeed-cache related action parameters from external IP addresses

Detection Strategies

• Monitor WordPress access logs for requests to admin-ajax.php containing plugin-specific action parameters
• Implement Web Application Firewall (WAF) rules to detect unauthorized access attempts to cache management endpoints
• Review audit logs for cache operations executed without corresponding administrator login events
• Deploy security plugins that log and alert on suspicious plugin activity

Monitoring Recommendations

• Enable comprehensive logging for WordPress admin operations
• Configure real-time alerts for cache-related activities occurring outside normal administrative patterns
• Implement rate limiting on AJAX endpoints to detect and mitigate automated exploitation attempts
• Review server access logs regularly for patterns indicating access control bypass attempts

How to Mitigate CVE-2025-67913

Immediate Actions Required

• Update Aruba HiSpeed Cache plugin to version 3.0.3 or later immediately
• Audit recent plugin activity logs for signs of unauthorized access
• Review and verify current plugin configuration settings for any unauthorized modifications
• Consider temporarily disabling the plugin if an immediate update is not possible

Patch Information

The vulnerability has been addressed in Aruba HiSpeed Cache version 3.0.3. Site administrators should update to this version or later through the WordPress plugin management interface or by downloading the latest version from the official WordPress plugin repository. For additional details, refer to the Patchstack Vulnerability Report.

Workarounds

• Temporarily deactivate the Aruba HiSpeed Cache plugin until the patched version can be installed
• Implement WAF rules to block unauthorized requests to plugin endpoints
• Restrict access to admin-ajax.php at the server level for untrusted IP addresses where feasible
• Use a WordPress security plugin to add additional authorization layers to AJAX handlers

# Example: Restrict admin-ajax.php access via .htaccess (Apache)
# Add to WordPress root .htaccess file
<Files admin-ajax.php>
    Order deny,allow
    Deny from all
    # Allow your admin IP addresses
    Allow from 192.168.1.0/24
    # Allow WordPress internal calls
    Allow from 127.0.0.1
</Files>