In the latest version of vanna-ai/vanna, the "vanna.ask" function is vulnerable to remote code execution due to prompt injection. The root cause is the lack of a sandbox when executing LLM-generated code, allowing an attacker to manipulate the code executed by the "exec" function in "src/vanna/base/base.py". This vulnerability can be exploited by an attacker to achieve remote code execution on the app backend server, potentially gaining full control of the server.