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

🗓️ 07 Jul 2026 16:03:10Reported by Python Packaging AdvisoryType 
pypa
 pypa
🔗 github.com👁 2 Views

vLLM DoS risk: unvalidated chat_template_arguments can enable tokenization that blocks the API server.

Related
Detection
Refs
Vulners
Node
pypivllmRange0.5.50.11.1

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07 Jul 2026 17:25Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.16.5
EPSS0.00319
SSVC
2