EUVD-2025-30886

Comprehensive Technical Analysis of EUVD-2025-30886

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the "Product Options and Price Calculation Formulas for WooCommerce – Uni CPO (Premium)" plugin for WordPress allows for arbitrary file uploads due to misconfigured file type validation in the uni_cpo_upload_file function. This flaw affects all versions up to and including 4.9.54. The severity of this vulnerability is rated with a CVSS Base Score of 9.8, which is considered critical.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• PR:N (No Privileges Required): No authentication is needed to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required.
• S:U (Unchanged): The impact does not change the scope.
• C:H (High Confidentiality Impact): Complete loss of system protection, leading to the attacker having control over what kind of information is read from the system.
• I:H (High Integrity Impact): Complete loss of system protection, leading to the attacker having control over what kind of information is sent to the system.
• A:H (High Availability Impact): Complete loss of availability, leading to the attacker being able to render the resource entirely unavailable.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated File Upload: An attacker can upload arbitrary files to the server without needing any authentication.
• Remote Code Execution (RCE): By uploading malicious files (e.g., PHP scripts), an attacker can execute arbitrary code on the server.

Exploitation Methods:

• Web Shell Upload: An attacker could upload a web shell to gain persistent access to the server.
• Malware Deployment: Malicious files could be uploaded to distribute malware to site visitors.
• Data Exfiltration: Sensitive data could be exfiltrated by uploading scripts that read and transmit data.

3. Affected Systems and Software Versions

Affected Software:

• Product Options and Price Calculation Formulas for WooCommerce – Uni CPO (Premium) plugin for WordPress
• Versions: All versions up to and including 4.9.54

Affected Systems:

• Any WordPress site using the affected versions of the Uni CPO plugin.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the plugin is updated to a version higher than 4.9.54 if a patch is available.
• Disable the Plugin: If an update is not available, consider disabling the plugin until a fix is released.
• Implement File Upload Restrictions: Configure the server to restrict file uploads to specific types and sizes.

Long-Term Mitigations:

• Regular Security Audits: Conduct regular security audits of all plugins and themes.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file uploads.
• User Education: Educate users on the risks of using outdated plugins and the importance of regular updates.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for e-commerce sites using WooCommerce. Given the widespread use of WordPress and WooCommerce, the potential for widespread exploitation is high. This could lead to data breaches, financial loss, and reputational damage for affected businesses.

6. Technical Details for Security Professionals

Vulnerable Function:

• uni_cpo_upload_file

Misconfiguration:

• The file type validation in the uni_cpo_upload_file function is misconfigured, allowing arbitrary file uploads.

Detection:

• Log Analysis: Monitor server logs for unusual file upload activities.
• File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized file changes.

Response:

• Incident Response Plan: Have an incident response plan in place to quickly address any detected exploitation.
• Patch Management: Ensure a robust patch management process to apply updates promptly.

References:

• Wordfence Threat Intelligence
• Builderius Uni CPO
• NVD CVE-2025-10412

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of exploitation and protect their digital assets.