EUVD-2025-30237

Comprehensive Technical Analysis of EUVD-2025-30237

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the Service Finder Bookings plugin for WordPress, identified as EUVD-2025-30237 (CVE-2025-5948), is classified as a privilege escalation issue via account takeover. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability can be exploited remotely over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): None (N) - No prior authentication is needed.
• User Interaction (UI): None (N) - No user interaction is required for the attack to succeed.
• Scope (S): Unchanged (U) - The vulnerability does not affect other security scopes.
• Confidentiality (C): High (H) - Complete loss of confidentiality.
• Integrity (I): High (H) - Complete loss of integrity.
• Availability (A): High (H) - Complete loss of availability.

This high severity score underscores the critical nature of the vulnerability, which can lead to full account takeover, including administrative privileges.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves exploiting the claim_business AJAX action, which does not properly validate a user's identity. This allows unauthenticated attackers to claim a business and subsequently log in as any user, including administrators. The attack requires:

• Subscriber Privileges or Brute-Forcing: Attackers need either subscriber-level access or the ability to brute-force valid claim_id values.
• Brute-Forcing Valid IDs: The claim_id is essential for taking over admin accounts. Brute-forcing these IDs is a practical approach for obtaining valid IDs.

3. Affected Systems and Software Versions

The vulnerability affects all versions of the Service Finder Bookings plugin up to and including version 6.0. The affected product is:

• Product Name: Service Finder Bookings
• Vendor: aonetheme
• Affected Versions: All versions up to and including 6.0

4. Recommended Mitigation Strategies

To mitigate this vulnerability, the following steps are recommended:

• Immediate Patching: Upgrade the Service Finder Bookings plugin to a version higher than 6.0, ensuring that the vulnerability has been addressed.
• Access Controls: Implement strict access controls and monitoring for AJAX actions, particularly those related to business claims.
• User Authentication: Enforce robust user authentication mechanisms to prevent unauthorized access.
• Rate Limiting: Implement rate limiting on AJAX requests to mitigate brute-force attacks.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues proactively.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using the Service Finder Bookings plugin. The potential for unauthenticated attackers to gain administrative access can lead to data breaches, unauthorized modifications, and service disruptions. This underscores the need for vigilant cybersecurity practices and timely patch management.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Endpoint: The claim_business AJAX action in the Service Finder Bookings plugin.
• Exploitation Steps:
  1. Identify the claim_id through brute-forcing or subscriber-level access.
  2. Exploit the claim_business AJAX action to claim a business.
  3. Log in as the targeted user, including administrators.
• Detection: Monitor for unusual AJAX requests and failed login attempts. Implement logging and alerting mechanisms for suspicious activities.
• Response: In case of an exploit, immediately isolate the affected system, revoke compromised credentials, and apply the necessary patches.

Conclusion

The EUVD-2025-30237 vulnerability in the Service Finder Bookings plugin represents a critical risk to WordPress sites using this plugin. Immediate patching and robust security measures are essential to mitigate the risk of account takeover and subsequent data breaches. Organizations should prioritize updating to the latest version of the plugin and implementing stringent access controls to safeguard their systems.