CVE-2025-66532

Executive Summary

CVE-2025-66532 is a Missing Authorization vulnerability in the Qodeinteractive Powerlift WordPress theme, affecting versions from n/a through 3.2.1. This flaw allows an unauthenticated attacker to exploit incorrectly configured access control security levels, potentially leading to unauthorized access to sensitive data or functionality. The vulnerability is classified as Medium severity (CVSS 4.3) with a low attack complexity and no user interaction required. As of this report, no official patch has been released, and no public exploit code is available. The EPSS score is 0.0%, indicating a low probability of active exploitation in the wild.

Supply Chain & Package Security

This vulnerability affects a WordPress theme distributed via the Qodeinteractive marketplace and potentially through third-party repositories. Since it is a theme, it is not part of the standard WordPress.org repository but is distributed as a commercial product. Users should verify the integrity of their theme files and ensure they are obtained from trusted sources. No known supply chain compromise has been reported.

CVSS Breakdown & Threat Level

• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
• Base Score: 4.3 (Medium)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: None (PR:N)
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: Low (C:L)
• Integrity Impact: None (I:N)
• Availability Impact: None (A:N)

Threat Level: Medium. The vulnerability allows unauthorized access to restricted resources but does not enable data modification or denial of service. Exploitation is straightforward but currently lacks public proof-of-concept code.

Deep Dive & Mechanics

The vulnerability resides in the Powerlift WordPress theme's access control mechanisms. The theme likely implements custom role-based permissions or AJAX handlers that fail to properly verify user capabilities before granting access to sensitive endpoints or data. An unauthenticated attacker can send crafted HTTP requests to these endpoints, bypassing authentication checks.

Root Cause: The theme uses current_user_can() or similar WordPress functions incorrectly, or relies on client-side checks that can be bypassed. The missing authorization check allows any visitor to access functions intended only for authenticated users with specific roles (e.g., administrators).

Attack Vector: The attacker sends a specially crafted HTTP request (GET or POST) to a vulnerable endpoint, such as an AJAX action or REST API route, without providing any authentication credentials. The server processes the request and returns sensitive data or performs unauthorized actions.

Impact: Successful exploitation could lead to:

• Exposure of private theme settings or user data.
• Unauthorized modification of theme options (if write access is also missing).
• Potential privilege escalation if combined with other vulnerabilities.

Vulnerable vs. Patched Code

Since no official patch is available, the following is a hypothetical comparison based on common missing authorization patterns.

Vulnerable Code (example from an AJAX handler):

add_action('wp_ajax_nopriv_powerlift_get_data', 'powerlift_get_data');
function powerlift_get_data() {
    // No capability check
    $data = get_option('powerlift_private_data');
    wp_send_json_success($data);
}

Patched Code (hypothetical):

add_action('wp_ajax_nopriv_powerlift_get_data', 'powerlift_get_data');
function powerlift_get_data() {
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized', 403);
    }
    $data = get_option('powerlift_private_data');
    wp_send_json_success($data);
}

The patched version adds a capability check (current_user_can('manage_options')) before processing the request, ensuring only administrators can access the data.

Exploitation & Lab Setup

Red Team (Exploitation)

Prerequisites:

• A WordPress site running Powerlift theme version < 3.2.1.
• Knowledge of the vulnerable endpoint (e.g., /wp-admin/admin-ajax.php?action=powerlift_get_data).

Exploitation Steps:

1. Identify the vulnerable AJAX action by analyzing the theme's functions.php or JavaScript files.
2. Send an unauthenticated GET request to the endpoint:

   curl -v "http://target.com/wp-admin/admin-ajax.php?action=powerlift_get_data"
   

3. If successful, the server returns sensitive data (e.g., theme options, user lists) without requiring authentication.

Proof-of-Concept (Python):

import requests

target = "http://target.com/wp-admin/admin-ajax.php"
params = {"action": "powerlift_get_data"}
response = requests.get(target, params=params)
if response.status_code == 200:
    print("Vulnerable! Data:", response.text)
else:
    print("Not vulnerable or patched.")

Blue Team (Detection & Defense)

Detection:

• Monitor for unauthenticated requests to admin-ajax.php with unknown or suspicious action parameters.
• Look for HTTP 200 responses to AJAX requests without a valid wpnonce or authentication cookie.

Defense:

• Apply the vendor patch immediately if available.
• If no patch, disable the vulnerable AJAX actions by adding a custom filter in a child theme:

  add_action('init', function() {
      remove_action('wp_ajax_nopriv_powerlift_get_data', 'powerlift_get_data');
  });
  

• Use a Web Application Firewall (WAF) to block requests to unknown AJAX actions from unauthenticated users.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP requests to /wp-admin/admin-ajax.php with action=powerlift_get_data (or similar) without authentication cookies.
  • Unusual GET/POST parameters containing theme-specific action names.
• File IOCs:
  • Presence of the Powerlift theme in /wp-content/themes/powerlift/ with version < 3.2.1.
• Log IOCs:
  • Web server logs showing 200 responses to admin-ajax.php from unauthenticated IPs.

Detection Engineering

YARA Rule

rule CVE_2025_66532_Powerlift_Missing_Auth {
    meta:
        description = "Detects vulnerable Powerlift theme files with missing authorization"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-66532"
    strings:
        $vuln_func = "wp_ajax_nopriv_" nocase
        $no_check = "current_user_can" nocase
    condition:
        $vuln_func and not $no_check
}

Sigma Rule

title: CVE-2025-66532 - Powerlift Missing Authorization
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects unauthenticated AJAX requests to Powerlift theme endpoints
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: 'GET'
        cs-uri-query|contains: 'admin-ajax.php'
        cs-uri-query|contains: 'action=powerlift_'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate authenticated users (check for cookies)
level: medium

Suricata Rule

alert http any any -> $EXTERNAL_NET any (
    msg:"CVE-2025-66532 - Powerlift Missing Authorization Attempt";
    flow:to_server,established;
    content:"GET"; http_method;
    content:"admin-ajax.php"; http_uri;
    content:"action=powerlift_"; http_uri;
    pcre:"/action=powerlift_[a-z_]+/i";
    classtype:attempted-recon;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Update the theme to version 3.2.1 or later if a patch becomes available.
2. Disable vulnerable AJAX actions by adding custom code to a child theme's functions.php:

   add_action('init', function() {
       remove_action('wp_ajax_nopriv_powerlift_get_data', 'powerlift_get_data');
   });
   

3. Implement a Web Application Firewall (WAF) rule to block unauthenticated requests to admin-ajax.php with unknown actions.

Long-term Recommendations:

• Conduct a security audit of all custom AJAX handlers in the theme.
• Use WordPress capability checks (current_user_can()) on all privileged endpoints.
• Monitor vendor channels for official patches and apply them promptly.

Valters IT Signature

Report generated by Valters IT Cyber Threat Intelligence Division | CVE-2025-66532 | 2025-04-10