CVE-2026-94624: Allocation of Resources Without Limits or Throttling in vllm-project vllm
vLLM versions up to 0.29.0 have a denial of service vulnerability in the P2P KV offloading feature when configured with TieringOffloadingSpec and a peer-to-peer secondary tier. Attackers can cause the system to crash by supplying arbitrary remote host and port values that create unreachable peer sessions, exhausting ZeroMQ socket resources and triggering an uncaught error that stops all inference.
AI Analysis
Technical Summary
CVE-2026-94624 describes a denial of service vulnerability in vLLM through version 0.29.0. The flaw exists in the P2P KV offloading mechanism when OffloadingConnector is configured with TieringOffloadingSpec and a peer-to-peer secondary tier. An attacker can supply arbitrary remote host and port parameters in kv_transfer_params, causing the creation of unreachable peer sessions that retain ZeroMQ sockets. These sockets consume context quota until exhaustion, leading to an uncaught ZMQError that crashes EngineCore and halts all inference operations.
Potential Impact
Successful exploitation results in a denial of service condition where the EngineCore component crashes and all inference processes stop. This disrupts normal operation of the vLLM system, potentially causing downtime and loss of service availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid configuring OffloadingConnector with TieringOffloadingSpec and a peer-to-peer secondary tier or restrict input parameters to prevent arbitrary remote host and port values in kv_transfer_params.
CVE-2026-94624: Allocation of Resources Without Limits or Throttling in vllm-project vllm
Description
vLLM versions up to 0.29.0 have a denial of service vulnerability in the P2P KV offloading feature when configured with TieringOffloadingSpec and a peer-to-peer secondary tier. Attackers can cause the system to crash by supplying arbitrary remote host and port values that create unreachable peer sessions, exhausting ZeroMQ socket resources and triggering an uncaught error that stops all inference.
CVSS v4.0
Score 8.7high
Affected software
vllm-project
vllm
pkg:github/vllm-project/vllmRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-94624 describes a denial of service vulnerability in vLLM through version 0.29.0. The flaw exists in the P2P KV offloading mechanism when OffloadingConnector is configured with TieringOffloadingSpec and a peer-to-peer secondary tier. An attacker can supply arbitrary remote host and port parameters in kv_transfer_params, causing the creation of unreachable peer sessions that retain ZeroMQ sockets. These sockets consume context quota until exhaustion, leading to an uncaught ZMQError that crashes EngineCore and halts all inference operations.
Potential Impact
Successful exploitation results in a denial of service condition where the EngineCore component crashes and all inference processes stop. This disrupts normal operation of the vLLM system, potentially causing downtime and loss of service availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid configuring OffloadingConnector with TieringOffloadingSpec and a peer-to-peer secondary tier or restrict input parameters to prevent arbitrary remote host and port values in kv_transfer_params.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-21T21:42:26.965Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab1acdf55bf5e2cf58d35c2
Added to database: 09/21/2026, 22:17:03 UTC
Last enriched: 09/21/2026, 22:31:36 UTC
Last updated: 09/21/2026, 22:46:37 UTC
Views: 6
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