Description
vLLM through 0.29.0 contains a resource exhaustion vulnerability in MooncakeConnector where rejected prefill requests create ownerless transfer placeholders that are never reclaimed. Attackers can send rejected requests to exhaust sender task pools, causing valid requests to be delayed by up to 480 seconds while health checks continue returning success.
Published: 2026-09-21
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 23 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 23 Sep 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Important


Mon, 21 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
Description vLLM through 0.29.0 contains a resource exhaustion vulnerability in MooncakeConnector where rejected prefill requests create ownerless transfer placeholders that are never reclaimed. Attackers can send rejected requests to exhaust sender task pools, causing valid requests to be delayed by up to 480 seconds while health checks continue returning success.
Title vLLM through 0.29.0 Resource Exhaustion via Ownerless Mooncake Transfer Placeholders
First Time appeared Vllm
Vllm vllm
Weaknesses CWE-772
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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-09-23T15:09:16.926Z

Reserved: 2026-09-21T21:42:27.917Z

Link: CVE-2026-94625

cve-icon Vulnrichment

Updated: 2026-09-23T15:09:12.331Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-21T22:17:01.433

Modified: 2026-09-23T15:17:30.077

Link: CVE-2026-94625

cve-icon Redhat

Severity : Important

Publid Date: 2026-09-21T22:04:14Z

Links: CVE-2026-94625 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-09-22T06:30:17Z

Weaknesses
  • CWE-772

    Missing Release of Resource after Effective Lifetime