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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
vllm-project vllm unaffected
Version Status Constraints
0 affected < 0.27.0
0.27.0 unaffected —

No data.

No data.

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Project Subscriptions

Vendors Products
Vllm Subscribe
Vllm Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/vllm-project/vllm/commit/e23b19309b8705b21c3b3ff4129c9974ba15a419 cve-icon cve-icon
https://github.com/vllm-project/vllm/security/advisories/GHSA-cqm8-jxg6-fqfq cve-icon cve-icon
https://www.vulncheck.com/advisories/vllm-before-denial-of-service-via-deepstream-backend cve-icon cve-icon
History

Tue, 25 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
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.
Title vLLM before 0.27.0 Denial of Service via DeepStream Backend
First Time appeared Vllm
Vllm vllm
Weaknesses CWE-400
CPEs cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
Vendors & Products Vllm
Vllm vllm
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-25T11:33:22.005Z

Reserved: 2026-08-25T01:17:12.263Z

Link: CVE-2026-78684

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-25T12:16:27.387

Modified: 2026-08-25T12:16:27.387

Link: CVE-2026-78684

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-25T12:30:17Z

Weaknesses