CVE-2025-7340

Comprehensive Technical Analysis of CVE-2025-7340

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-7340 CVSS Score: 9.8

The vulnerability in the HT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder plugin for WordPress allows for arbitrary file uploads due to missing file type validation in the temp_file_upload function. This flaw is present in all versions up to and including 2.2.1. The CVSS score of 9.8 indicates a critical severity, highlighting the potential for significant impact if exploited.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthenticated Attackers: The vulnerability can be exploited by unauthenticated attackers, meaning anyone with access to the internet can potentially exploit this flaw without needing any credentials.
• Arbitrary File Uploads: Attackers can upload malicious files, such as PHP scripts, to the server.

Exploitation Methods:

• Remote Code Execution (RCE): By uploading a malicious PHP file, attackers can execute arbitrary code on the server, leading to full control over the affected WordPress site.
• Data Exfiltration: Attackers can upload scripts to exfiltrate sensitive data from the server.
• Persistent Backdoors: Malicious files can be used to establish persistent backdoors, allowing attackers to maintain access even after the initial vulnerability is patched.

3. Affected Systems and Software Versions

Affected Software:

• HT Contact Form Widget For Elementor Page Builder & Gutenberg Blocks & Form Builder plugin for WordPress

Affected Versions:

• All versions up to and including 2.2.1

Systems at Risk:

• Any WordPress site using the affected plugin versions.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update the Plugin: Ensure that the plugin is updated to a version that includes the patch for this vulnerability.
• Disable the Plugin: If an update is not immediately available, consider disabling the plugin until a patched version is released.

Long-Term Mitigations:

• Regular Updates: Implement a regular update schedule for all plugins and themes to ensure that vulnerabilities are patched promptly.
• File Upload Validation: Ensure that all file uploads are validated for type and content to prevent arbitrary file uploads.
• Web Application Firewalls (WAF): Deploy WAFs to monitor and block suspicious file upload attempts.
• Access Controls: Implement strict access controls to limit who can upload files to the server.

5. Impact on Cybersecurity Landscape

Broader Implications:

• Widespread Use: Given the popularity of WordPress and the widespread use of plugins, this vulnerability poses a significant risk to a large number of websites.
• Attack Surface: The ability for unauthenticated attackers to exploit this vulnerability increases the attack surface, making it a high-priority issue for cybersecurity professionals.
• Reputation and Trust: Compromised websites can lead to loss of user trust and potential legal implications, especially if sensitive data is exfiltrated.

6. Technical Details for Security Professionals

Vulnerable Function:

• temp_file_upload in FileManager.php

Code Analysis:

• The vulnerability arises from the lack of proper file type validation in the temp_file_upload function. This allows attackers to upload files of any type, including executable scripts.

Patch Details:

• The patch involves adding proper file type validation to ensure that only permitted file types can be uploaded. This can be achieved by implementing checks for file extensions and MIME types.

Example Patch:

function temp_file_upload($file) {
    $allowed_types = ['jpg', 'jpeg', 'png', 'gif'];
    $file_extension = pathinfo($file['name'], PATHINFO_EXTENSION);
    if (!in_array($file_extension, $allowed_types)) {
        return false; // Reject the file upload
    }
    // Proceed with file upload
}

References:

• Plugin Source Code
• Patch Changeset
• Third Party Advisory

Conclusion

CVE-2025-7340 represents a critical vulnerability that requires immediate attention from cybersecurity professionals. The potential for remote code execution and data exfiltration underscores the need for prompt mitigation strategies, including updating the affected plugin and implementing robust file upload validation mechanisms. Regular updates and the use of security tools like WAFs can help mitigate the risk of similar vulnerabilities in the future.