Bug 2538247 (CVE-2026-94622) - CVE-2026-94622 vllm: vLLM: Denial of Service via Incomplete NIXL KV Transfer Metadata
Summary: CVE-2026-94622 vllm: vLLM: Denial of Service via Incomplete NIXL KV Transfer ...
Keywords:
Status: NEW
Alias: CVE-2026-94622
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 17:29 UTC by OSIDB Bzimport
Modified: 2026-09-24 18:26 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-22 17:29:32 UTC 
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.
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