EUVD-2026-0864

Comprehensive Technical Analysis of EUVD-2026-0864

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2026-0864, also known as CVE-2025-31048, is classified as an "Unrestricted Upload of File with Dangerous Type" in the Themify Shopo WordPress theme. This vulnerability allows an attacker to upload a web shell to a web server, which can lead to complete control over the affected system.

Severity Evaluation:

• Base Score: 9.9 (Critical)
• Base Score Version: CVSS:3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

The CVSS score of 9.9 indicates a critical vulnerability. The vector string details the following:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): Low (L)
• User Interaction (UI): None (N)
• Scope (S): Changed (C)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high severity score underscores the potential for significant damage if exploited.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unrestricted File Upload: An attacker can upload a malicious file, such as a web shell, to the server.
• Remote Code Execution (RCE): Once the web shell is uploaded, the attacker can execute arbitrary commands on the server.

Exploitation Methods:

• Web Shell Upload: The attacker can exploit the vulnerability by uploading a PHP web shell, which allows them to execute commands on the server.
• Command Injection: Through the web shell, the attacker can inject commands to manipulate the server, exfiltrate data, or install additional malware.

3. Affected Systems and Software Versions

Affected Software:

• Product: Themify Shopo WordPress Theme
• Versions: n/a through 1.1.4

All installations of the Themify Shopo theme up to version 1.1.4 are vulnerable to this issue.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update: Upgrade to a patched version of the Themify Shopo theme if available.
• Disable File Uploads: Temporarily disable file upload functionality until a patch is applied.
• Monitor: Implement continuous monitoring for suspicious file uploads and unauthorized access attempts.

Long-Term Mitigations:

• Regular Updates: Ensure all WordPress themes and plugins are regularly updated.
• Access Controls: Implement strict access controls and permissions for file uploads.
• Web Application Firewall (WAF): Deploy a WAF to filter out malicious upload attempts.
• Security Audits: Conduct regular security audits and vulnerability assessments.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations using the Themify Shopo theme. Given the widespread use of WordPress and its themes, the potential impact includes:

• Data Breaches: Unauthorized access to sensitive data.
• Service Disruption: Potential denial of service attacks.
• Reputation Damage: Loss of trust from customers and partners.
• Compliance Issues: Violation of data protection regulations such as GDPR.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Unrestricted Upload of File with Dangerous Type
• Impact: Allows upload of a web shell leading to RCE.
• Affected Component: File upload functionality in Themify Shopo theme.

Detection and Response:

• Log Analysis: Review server logs for unusual file upload activities.
• File Integrity Monitoring: Use file integrity monitoring tools to detect unauthorized file changes.
• Incident Response: Have an incident response plan in place to quickly address any detected breaches.

References:

• NVD Entry
• Patchstack Vulnerability Database

Conclusion: The EUVD-2026-0864 vulnerability in the Themify Shopo theme is critical and requires immediate attention. Organizations should prioritize updating the theme and implementing robust security measures to mitigate the risk of exploitation. Continuous monitoring and regular security audits are essential to maintain a secure cybersecurity posture.