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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-116178

vLLM 0.20.0 before 0.30.0 DoS via /inference/v1/generate mm_placeholders

Description

vLLM from 0.20.0 before 0.30.0 contains a denial of service vulnerability that allows remote attackers to crash the engine by sending inconsistent multimodal metadata to the disaggregated /inference/v1/generate endpoint. Attackers can replay a valid multimodal item with repeated or overlapping mm_placeholders ranges or mismatched kwargs_data and mm_hashes lists, producing a negative text span in Qwen2.5-VL position construction that terminates the engine.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

vllm-project vllm

Default version status: unaffected

  • 0.20.0 to < 0.30.0affected
  • 0.30.0unaffected
pkg:pypi/vllm

References