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Servers and applications

CVE-2026-116179

vLLM 0.18.0 before 0.31.0 Memory Exhaustion via media_io_kwargs num_frames Override

Severity
High 8.7
Published
25 Oct 2026
Last changed
28 Oct 2026
Added to UpHeron
3 Nov 2026
Fixed in
0.31.0
Sources
NVD, CVE Program

Description

vLLM from 0.18.0 before 0.31.0 contains a resource exhaustion vulnerability that allows API clients to bypass the video/jpeg frame-count cap by overriding num_frames through media_io_kwargs. Attackers can set num_frames to -1 with a large inline video so VideoMediaIO.load_base64 decodes every frame, exhausting memory and crashing the API frontend.

Affected software

SoftwareAffected versions
vLLMServers and applications · cna:vllm-project|vllm
  • From 0.18.0 before 0.31.0
vLLMServers and applications · cpe:a:vllm:vllm
  • From 0.18.0 before 0.31.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-116179
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-116179