Executive brief
YunaiV yudao-cloud is a cloud-based management platform. A security flaw in its IoT data management component allows an administrative user to force the server to make unauthorized network requests. This could be used to scan internal corporate networks, access sensitive internal services, or disrupt operations by targeting systems that are not normally exposed to the internet.
Technical details
A stored Server-Side Request Forgery (SSRF) vulnerability exists in the Admin API Endpoint of YunaiV yudao-cloud 2026.03. The vulnerability is located in the IotDataSinkHttpConfig function within the /admin-api/iot/data-sink/create endpoint. The application fails to validate or filter URLs provided in the IoT data sink configuration before storing them in the database. When an IoT message triggers a data rule, the IotHttpDataSinkAction retrieves the stored URL and uses RestTemplate to perform an outbound request without internal IP filtering or protocol restrictions. An attacker with administrative privileges can exploit this to perform internal port scanning or access internal metadata services. The vulnerability also reportedly affects TCP, WebSocket, and MQTT sink configurations.
Affected products
- YunaiV yudao-cloud 2026.03
Timeline
- 2026-05-25: disclosed: Public disclosure of the exploit via GitHub and VulDB.
- 2026-05-25: advisory: NVD published CVE-2026-9464.