CVE-2026-78684
vLLM before 0.27.0 Denial of Service via DeepStream Backend
- State
- Published
- Severity
- 6.9 Medium
- Published
- Aug 25, 2026
- Updated
- Aug 31, 2026
- Reserved
- Aug 25, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
vllmvllm-project |
|
References
- GitHub Security Advisory (GHSA-cqm8-jxg6-fqfq)vendor-advisory
- Patch Commitpatch
- VulnCheck Advisory: vLLM before 0.27.0 Denial of Service via DeepStream Backendthird-party-advisory
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