CVE-2025-7487 is a critical vulnerability identified in the JoeyBling SpringBoot_MyBatisPlus framework, specifically affecting the SysFileController component's /file/upload endpoint. The vulnerability arises from improper validation and handling of the 'portraitFile' argument, which allows an attacker to perform an unrestricted file upload. This means that an attacker can remotely upload arbitrary files to the server without authentication or user interaction. The unrestricted upload can lead to remote code execution, server compromise, or deployment of malicious payloads, depending on the server configuration and file handling mechanisms. The vulnerability exists in versions up to commit a6a825513bd688f717dbae3a196bc9c9622fea26, but due to the product's rolling release model, exact versioning is unclear. The CVSS 4.0 base score is 5.3 (medium severity), reflecting network attack vector, low attack complexity, no privileges or user interaction required, but limited impact on confidentiality, integrity, and availability. Although no known exploits are currently observed in the wild, the public disclosure of the exploit increases the risk of exploitation. The vulnerability's root cause is insufficient input validation and lack of restrictions on file types and sizes during upload, which is a common security flaw in web applications handling file uploads. This vulnerability is particularly dangerous because it can be exploited remotely without authentication, making it accessible to a wide range of threat actors. The continuous delivery model of the product complicates patch management and version tracking, potentially delaying mitigation efforts.

For European organizations using JoeyBling SpringBoot_MyBatisPlus, this vulnerability poses a significant risk. Exploitation could lead to unauthorized access, data breaches, and service disruption. Attackers could upload malicious web shells or scripts, enabling persistent access and lateral movement within corporate networks. This can compromise sensitive data, including personal data protected under GDPR, leading to regulatory penalties and reputational damage. The medium CVSS score suggests limited direct impact on confidentiality, integrity, and availability, but the unrestricted upload capability can be leveraged for more severe attacks depending on the environment. Organizations relying on this framework for critical business applications or customer-facing services are at higher risk. The lack of authentication and user interaction requirements means automated attacks and mass scanning campaigns could target vulnerable systems across Europe. Additionally, the rolling release nature of the software may delay patch deployment, increasing exposure time. The threat is exacerbated if organizations have weak internal network segmentation or insufficient monitoring of file upload endpoints.

European organizations should implement immediate compensating controls while awaiting official patches. These include: 1) Restricting access to the /file/upload endpoint via network-level controls such as firewalls or web application firewalls (WAF) with rules to detect and block suspicious upload attempts. 2) Implement strict server-side validation of uploaded files, enforcing allowed file types, size limits, and scanning for malware. 3) Employ application-layer authentication and authorization to ensure only legitimate users can upload files. 4) Monitor logs and network traffic for unusual upload activity or anomalies. 5) Isolate the file upload functionality in a sandboxed environment or separate server to limit potential damage. 6) Conduct thorough code reviews and penetration testing focused on file upload mechanisms. 7) Engage with the vendor or community to obtain updates or patches as soon as they become available, and prioritize their deployment. 8) Educate developers and administrators about secure file handling practices to prevent similar vulnerabilities. These measures go beyond generic advice by focusing on immediate risk reduction and operational controls tailored to the vulnerability's characteristics.