Cherry Studio allows one-click on a specific URL to cause a command to execute

Cherry Studio is a desktop client that supports for multiple LLM providers. Cherry Studio registers a custom protocol called cherrystudio://. When handling the MCP installation URL, it parses the base64-encoded configuration data and directly executes the command within it. In the files src/main/services/ProtocolClient.ts and src/main/services/urlschema/mcp-install.ts, when receiving a URL of the cherrystudio://mcp type, the handleMcpProtocolUrl function is called for processing. If an attacker crafts malicious content and posts it on a website or elsewhere (there are many exploitation methods, such as creating a malicious website with a button containing this malicious content), when the user clicks it, since the pop-up window contains normal content, the direct click is considered a scene action, and the malicious command is directly triggered, leading to the user being compromised. As of time of publication, no known patched versions exist.