CVE-2026-9540CWE-404

vllm-project vllm OpenAI-compatible Serving Path denial of service

Medium · published May 26, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
53.5
In the wild
Unconfirmed
What it is

A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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/E:P
EPSS
0.00724 · 53.5th percentile
Weakness
CWE-404 · Improper Resource Shutdown or Release
Published
2026-05-26T10:30Z
EPSS history
Timeline
  • 26 MAY 10:30Z
    vllm-project vllm OpenAI-compatible Serving Path denial of service
    cvelistv5