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Medium · 5.3 CVE-2026-78684 EUVD-2026-65457GHSA-cqm8-jxg6-fqfqGHSA-hw36-j4q7-vjxxPYSEC-2026-4003

vLLM before 0.27.0 Denial of Service via DeepStream Backend

Published Aug 25, 2026 · Updated Aug 31, 2026 · Assigned by VulnCheck

Description

vLLM before 0.27.0 fails to properly classify DeepStream as a GPU backend and omits pixel-limit enforcement in its decode path. Unauthenticated attackers can activate DeepStream at request time to initialize the process-wide GPU decode pool and submit video that bypasses resource controls, causing partial denial of service for concurrent requests.

Affected products

VendorProductAffectedFixed
vllm-project vllm < 0.27.0 0.27.0

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI vllm < 0.27.0 0.27.0 PYSEC-2026-4003

Advisories 1

References