CVE-2026-94625

Medium

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.

SeverityMedium

CVSS5.3

Exploit probability—

ProductVllm

PublishedSep 21, 2026

First seenSep 21, 2026

Weakness typeCWE-772CWE-772

How to fix

Update

vllm0.30.0 or later

Patches

github.com/vllm-project/vllm/pull/51236

Affected products

Product	Affected versions	Fixed in
vllm vllm	v ≤ 0.29.0	—
vllmPyPI	v < 0.30.0	0.30.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.