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Servers and applications

CVE-2026-116178

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

Severity
High 8.2
Published
25 Oct 2026
Last changed
28 Oct 2026
Added to UpHeron
3 Nov 2026
Fixed in
0.30.0
Sources
NVD, CVE Program

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…

Affected software

SoftwareAffected versions
vLLMServers and applications · cna:vllm-project|vllm
  • From 0.20.0 before 0.30.0
vLLMServers and applications · cpe:a:vllm:vllm
  • From 0.20.0 before 0.30.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-116178
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-116178