A Server-Side Request Forgery (SSRF) vulnerability was identified in langgenius/dify version 0.10.2. The vulnerability occurs in the Create Knowledge section when uploading DOCX files. If an external relationship exists in the DOCX file, the reltype value is requested as a URL using the requests module instead of the ssrf_proxy, leading to an SSRF vulnerability. This issue was fixed in version 0.11.0.
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.