CVE-2026-94624
vLLM through 0.29.0 Denial of Service via Unbounded P2P KV Offloading Sessions
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-770 |
| Vendor | vllm-project |
| Product | vllm |
| Published | Sep 21, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
vllm-project / vllm
0 ≤ 0.29.0
References
github.com: https://github.com/vllm-project/vllm/pull/51504 github.com: https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/control/zmq.py#L240-L260 github.com: https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/manager.py#L667-L677 github.com: https://github.com/vllm-project/vllm vulncheck.com: https://www.vulncheck.com/advisories/vllm-through-0.29.0-denial-of-service-via-unbounded-p2p-kv-offloading-sessions
Credits
Mingkai Yu Jiapeng Li Jiajia Liu