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CVE-2026-94623 vLLM through 0.29.0 Denial of Service via NIXL Multi-Prompt Assertion Failure

🗓️ 21 Sep 2026 22:04:12Reported by VulnCheckType 
cvelist
 cvelist
🔗 www.cve.org👁 12 Views

vLLM through 0.29.0 contains a denial of service vulnerability in the NIXL connector's prefix caching implementation that fails to properly validate block counts across multi-prompt completion requests in prefill/decode disaggregated deployments. ...

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-94623
21 Sep 202623:02
circl
cve
CVE
CVE-2026-94623
21 Sep 202622:04
cve
euvd
EUVD
EUVD-2026-84217
22 Sep 202600:30
euvd
nvd
NVD
CVE-2026-94623
21 Sep 202622:17
nvd
[
  {
    "vendor": "vllm-project",
    "product": "vllm",
    "defaultStatus": "unaffected",
    "packageURL": "pkg:pypi/vllm",
    "versions": [
      {
        "version": "0",
        "lessThanOrEqual": "0.29.0",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  }
]

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21 Sep 2026 22:04Current
CVSS 3.17.5
CVSS 48.7
12