EUVD-2025-30877

Comprehensive Technical Analysis of EUVD-2025-30877

1. Vulnerability Assessment and Severity Evaluation

The vulnerability in the Podlove Podcast Publisher plugin for WordPress, identified as EUVD-2025-30877 (CVE-2025-10147), allows for arbitrary file uploads due to missing file type validation in the move_as_original_file function. This vulnerability affects all versions up to and including 4.2.6. 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 vulnerability does not change the security scope.
• C:H (High Confidentiality Impact): Complete loss of confidentiality.
• I:H (High Integrity Impact): Complete loss of integrity.
• A:H (High Availability Impact): Complete loss of availability.

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:

• Direct File Upload: An attacker can directly upload a malicious file by exploiting the move_as_original_file function.
• Web Shell Upload: An attacker can upload a web shell to gain persistent access to the server.
• Malware Distribution: An attacker can upload malware that can be distributed to site visitors.

3. Affected Systems and Software Versions

Affected Software:

• Podlove Podcast Publisher plugin for WordPress

Affected Versions:

• All versions up to and including 4.2.6

Vendor:

• eteubert

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Upgrade to a patched version of the Podlove Podcast Publisher plugin (if available).
• Disable the Plugin: Temporarily disable the plugin until a patch is released.
• Implement File Upload Restrictions: Add server-side restrictions to limit file 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 activities.
• 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 organizations and individuals using WordPress with the Podlove Podcast Publisher plugin. Given the widespread use of WordPress, this vulnerability could be exploited to compromise numerous websites, leading to data breaches, unauthorized access, and potential financial losses.

Regulatory Implications:

• GDPR Compliance: Organizations must ensure they comply with GDPR by protecting user data from unauthorized access.
• Incident Reporting: Organizations must be prepared to report any data breaches resulting from this vulnerability to relevant authorities.

6. Technical Details for Security Professionals

Vulnerable Function:

• move_as_original_file in the image.php file (Line 465)

Code Analysis:

• The function lacks proper validation for file types, allowing any file to be uploaded.

References:

• Wordfence Threat Intelligence
• WordPress Plugin Repository
• NVD Detail

Patch Details:

• A patch has been released in the changeset 3364994.

Conclusion: This vulnerability underscores the importance of regular updates and thorough security practices in maintaining the integrity and security of web applications. Organizations should prioritize updating affected plugins and implementing robust security measures to mitigate such risks.