CVE-2025-56520 Scanner

Dify is a software solution utilized by various industries for managing and handling remote file uploads securely. Dify is often implemented in organizations to streamline the process of file management and enhance the efficiency of file operations in web applications. The platform is designed to facilitate easy and secure handling of remote files, thus reducing manual intervention. This software is used globally by developers and companies to ensure proper handling and storage of crucial data. It focuses on providing a seamless user experience with robust integration capabilities. Dify is recognized for its reliable and efficient performance in processing remote files while ensuring data integrity.

The Server-Side-Request-Forgery (SSRF) vulnerability in Dify v1.6.0 allows attackers to send unauthorized requests to internal systems. This vulnerability arises due to improper validation in the software's remote file upload API. When exploited, it enables malicious users to potentially access internal resources or sensitive data. The SSRF flaw is critical as it can be leveraged to bypass authentication mechanisms. Attackers might exploit this to send crafted requests to otherwise inaccessible parts of the internal network. Proper implementation of security controls can help mitigate such vulnerabilities.

The technical details of this vulnerability involve improper validation in the RemoteFileUploadApi of Dify. Attackers can exploit this by sending specially crafted requests to influence server-side queries. The vulnerability is caused by insufficient input validation within specific API endpoints. The lack of proper sanitization allows for dangerous URL redirections, making internal server information accessible. Additionally, this flaw lies specifically in how requests are handled and processed, without adequate controls to prevent malicious exploitation. Addressing the API's input validation can be a critical step in remediation.

If exploited, this Server-Side-Request-Forgery vulnerability can have multiple severe impacts. Malicious actors can gain unauthorized access to sensitive internal resources. This access might be leveraged to extract confidential information or escalate privileges within the server ecosystem. The vulnerability could also result in misuse or overwriting of significant server data. In severe cases, it may lead to compromised system integrity or data breaches. Continuous exploitation might further impact server performance and reliability.

REFERENCES

• https://github.com/langgenius/dify
• https://dify.ai/