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Vulnerabilities CVE-2026-78684

CVE-2026-78684

Medium
Open
TLP:CLEAR

vLLM before 0.27.0 Denial of Service via DeepStream Backend

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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.

Details

CVSS Score
6.9
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Confidence
90%
Published
Aug 25, 2026
Last Modified
Aug 25, 2026
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