CVE-2026-94622: Vllm

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

vLLM versions through 0.29.0 contain a denial of service vulnerability in the NIXL connector's metadata handling for prefill/decode disaggregated deployments. Attackers can send requests with incomplete kv_transfer_params dictionary entries to trigger an uncaught KeyError in EngineCore scheduling, causing the decode engine to terminate and making all routed requests fail until manual restart.

Affected products

• Vllm Vllm: up to and including 0.29.0

Published 2026-09-21. Last modified 2026-09-29.