CVE-2025-10147

Comprehensive Technical Analysis of CVE-2025-10147

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-10147

Description: The Podlove Podcast Publisher plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the move_as_original_file function in all versions up to, and including, 4.2.6. This vulnerability allows unauthenticated attackers to upload arbitrary files to the affected site's server, potentially leading to remote code execution (RCE).

CVSS Score: 9.8

Severity Evaluation:

• Critical: A CVSS score of 9.8 indicates a critical vulnerability. The high score is due to the potential for unauthenticated attackers to achieve remote code execution, which can lead to full system compromise.
• Impact: The vulnerability can result in complete loss of confidentiality, integrity, and availability of the affected system.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated File Upload: Attackers can exploit the vulnerability by uploading malicious files without needing any authentication.
• Remote Code Execution (RCE): By uploading executable files (e.g., PHP scripts), attackers can execute arbitrary code on the server.

Exploitation Methods:

• File Upload: Attackers can craft a specially designed HTTP request to upload a malicious file.
• Code Execution: Once the file is uploaded, attackers can trigger its execution by accessing it via a web request.

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

Systems at Risk:

• Any WordPress installation using the vulnerable versions of the Podlove Podcast Publisher plugin.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Upgrade to the latest version of the Podlove Podcast Publisher plugin that addresses this vulnerability.
• Disable the Plugin: If an update is not immediately available, consider disabling the plugin until a fix is released.

Long-Term Mitigations:

• Regular Updates: Ensure all plugins and WordPress core are regularly updated.
• File Upload Validation: Implement additional server-side validation for file uploads to ensure only permitted file types are accepted.
• Web Application Firewall (WAF): Deploy a WAF to monitor and block suspicious file upload attempts.
• Least Privilege: Ensure that the web server and WordPress installation run with the least privileges necessary.

5. Impact on Cybersecurity Landscape

Broader Implications:

• Widespread Use: Given the popularity of WordPress and the Podlove Podcast Publisher plugin, this vulnerability poses a significant risk to a large number of websites.
• Exploit Availability: The high CVSS score and the nature of the vulnerability make it an attractive target for attackers, increasing the likelihood of exploit development and widespread attacks.
• Reputation and Trust: Compromised websites can lead to data breaches, loss of user trust, and financial losses.

6. Technical Details for Security Professionals

Vulnerable Function:

• The move_as_original_file function in the image.php file (line 465) lacks proper file type validation.

Code Analysis:

• File: lib/model/image.php
• Line: 465
• Issue: The function does not validate the type of the uploaded file, allowing any file type to be uploaded.

References:

• Podlove Podcast Publisher Plugin Source Code
• WordPress Changeset
• Wordfence Threat Intelligence

Conclusion: CVE-2025-10147 represents a critical risk to WordPress sites using the Podlove Podcast Publisher plugin. Immediate action is required to mitigate the risk of remote code execution. Regular updates, proper file validation, and robust security measures are essential to protect against such vulnerabilities.