Melis Platform is a content management system (CMS) developed by Melis Technology, designed for web developers and enterprises to build and manage complex, content-rich websites. It offers modular architecture, scalability, and integration capabilities, making it suitable for large-scale digital projects. Organizations use Melis Platform to streamline content workflows, deliver dynamic web experiences, and manage multi-site deployments efficiently.
CVE-2025-10353 is a critical unrestricted file upload vulnerability that arises from insufficient validation of uploaded files in the Melis Platform. The flaw occurs when the application fails to properly check the file type, size, or content during the upload process, allowing attackers to bypass security controls. This vulnerability is particularly dangerous because it can be exploited remotely without authentication, leading to full system compromise.
Technically, the vulnerability is triggered via the 'mcsdetail_img' parameter in the file upload endpoint. An attacker can craft a malicious file, such as a PHP web shell, and upload it through this parameter. The application does not verify the file extension or MIME type, so the malicious file is stored on the server and can be executed by accessing its path, enabling remote code execution.
If exploited, an attacker can achieve remote code execution with the privileges of the web server, typically leading to full control over the affected system. This can result in data theft, website defacement, malware installation, or lateral movement within the network. Given the CVSS score of 9.8, this vulnerability poses a severe risk to any organization using Melis Platform without the latest security patches.
- Update Melis Platform to the latest patched version that fixes CVE-2025-10353.
- Implement strict file type validation by checking file extensions and MIME types against a whitelist.
- Restrict file upload directory permissions to prevent execution of uploaded files (e.g., disable execute permissions).
- Use a web application firewall (WAF) to block malicious file upload attempts.
- Conduct regular security audits and penetration testing to identify similar vulnerabilities.
- Educate developers on secure file upload practices, including server-side validation and sanitization.
- Monitor server logs for unusual file upload activity and investigate anomalies promptly.
- Apply the principle of least privilege to file upload functionalities, ensuring only authorized users can upload files.
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