SSRF protection implemented in https://github.com/lobehub/lobe-chat/blob/main/src/app/api/proxy/route.ts does not consider redirect and could be bypassed when attacker provides external malicious url which redirects to internal resources like private network or loopback address.
If an attacker can successfully authenticate through SSO/Access Code, they can obtain the real backend API Key by modifying the base URL to their own attack URL on the frontend and setting up a server-side request.
The latest version of lobe-chat(by now v0.141.2) has an unauthorized ssrf vulnerability. An attacker can construct malicious requests to cause SSRF without logging in, attack intranet services, and leak sensitive information.
Lobe Chat is a chatbot framework that supports speech synthesis, multimodal, and extensible Function Call plugin system. When the application is password-protected (deployed with the ACCESS_CODE option), it is possible to access plugins without proper authorization (without password). This vulnerability is patched in 0.122.4.