CVE-2025-62426 (GCVE-0-2025-62426)
Vulnerability from cvelistv5
Published
2025-11-21 01:21
Modified
2025-11-24 18:12
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before 0.11.1, the /v1/chat/completions and /tokenize endpoints allow a chat_template_kwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chat_template_kwargs parameters, it is possible to block processing of the API server for long periods of time, delaying all other requests. This issue has been patched in version 0.11.1.
References
Impacted products
Vendor Product Version
vllm-project vllm Version: >= 0.5.5, < 0.11.1
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