vLLM vulnerable to DoS via large Chat Completion or Tokenization requests with specially crafted `chat_template_kwargs`

Summary The /v1/chat/completions and /tokenize endpoints allow a chattemplatekwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chattemplatekwargs parameters, it is possible to block processing of the API server for long...

CVE-2025-48956 vLLM API endpoints vulnerable to Denial of Service Attacks

vLLM is an inference and serving engine for large language models LLMs. From 0.1.0 to before 0.10.1.1, a Denial of Service DoS vulnerability can be triggered by sending a single HTTP GET request with an extremely large header to an HTTP endpoint. This results in server memory exhaustion,...