vLLM: Responses API bypasses trust_request_chat_template for chat_template_kwargs

影響: pip:vllm >= 0.16.0, < 0.32.0 → 0.32.0

vLLM's /v1/responses endpoint accepts request-level chat_template_kwargs, but does not apply the --trust-request-chat-template gate that protects Chat Completions, render, tokenize, and pooling paths. When the server is run with the documented default trust_request_chat_template=False and no explicit --chat-template, a Responses request can pass: json {"chat_template_kwargs": {"chat_template": " "}} That key is preserved by ChatParams.get_apply_chat_template_kwargs() and then bound as the chat_…

Read on GitHub Advisory Database

On 10/29/2026, 06:14 AM, GitHub Advisory Database published "vLLM: Responses API bypasses trust_request_chat_template for chat_template_kwargs" (type: Advisory). Severity is "Medium" (medium). Related technologies: Python. CVE: CVE-2026-115918.