vllm-project vLLM up to 0.29.0 P2P KV Offloading kv_transfer_params denial of service

Summaryinfo

A vulnerability, which was classified as problematic, was found in vllm-project vLLM up to 0.29.0. The affected element is an unknown function of the component P2P KV Offloading. Such manipulation of the argument kv_transfer_params leads to denial of service. This vulnerability is documented as CVE-2026-94624. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in vllm-project vLLM up to 0.29.0 and classified as problematic. Affected by this issue is some unknown functionality of the component P2P KV Offloading. The manipulation of the argument kv_transfer_params with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

vLLM through 0.29.0 contains a denial of service vulnerability in P2P KV offloading when OffloadingConnector is configured with TieringOffloadingSpec and a peer-to-peer secondary tier. Attackers can supply arbitrary remote host and port values in kv_transfer_params to create unreachable peer sessions that retain ZeroMQ sockets until the context quota is exhausted, causing an uncaught ZMQError that crashes EngineCore and stops all inference.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-94624 since 09/21/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Project Management Software

Vendor

• vllm-project

Name

• vLLM

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29.0

Website

• Product: https://github.com/vllm-project/vllm/

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