CVE-2026-78684CWE-400denial-of-service

CVE-2026-78684

Medium · published August 25, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
48.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.9 · 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
EPSS
0.00608 · 48.5th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-08-25T16:16Z
Affected products (1)
ProductVersionsFixed in
vllm/vllm< 0.27.00.27.0
References (3)
https://github.com/vllm-project/vllm/commit/e23b19309b8705b21c3b3ff4129c9974ba15a419 · [email protected]https://github.com/vllm-project/vllm/security/advisories/GHSA-cqm8-jxg6-fqfq · [email protected]https://www.vulncheck.com/advisories/vllm-before-denial-of-service-via-deepstream-backend · [email protected]
EPSS history
Timeline
  • 27 AUG 06:46Z
    EPSS moved — → 0%
    epss
  • 25 AUG 11:33Z
    vLLM before 0.27.0 Denial of Service via DeepStream Backend
    cvelistv5