Resource exhaustion in Vllm
CVE-2026-94624
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (37.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.004 · change: -0.002
Affected products
Weakness classification (CWE)
References
- github.com/vllm-project/vllm (Product, product)
- github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/contro… (Product, technical-description)
- github.com/vllm-project/vllm/blob/v0.29.0/vllm/v1/kv_offload/tiering/p2p/manage… (Product, technical-description)
- github.com/vllm-project/vllm/pull/51504 (issue-tracking, Patch, patch, Issue Tracking)
- www.vulncheck.com/advisories/vllm-through-0.29.0-denial-of-service-via-unbounde… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-94624?
- CVE-2026-94624 is a high-severity vulnerability in Vllm, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-09-21.
- How severe is CVE-2026-94624?
- High severity. CVSS v3 base score is 7.5 out of 10.