Description
A vulnerability was found in vllm-project vLLM 0.26.0/0.27.0. Affected is the function MoRIIOConnectorScheduler.request_finished/MoRIIOConnectorWorker.get_finished/MoRIIOWrapper._handle_release_message of the file vllm/distributed/kv_transfer/kv_connector/v1/moriio/moriio_connector.py of the component MoRIIO Acknowledgement Handler. Performing a manipulation of the argument request_id/kv_transfer_params results in resource consumption. It is possible to initiate the attack remotely. The project was informed of the problem early through a pull request but has not reacted yet.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vllm-project | vLLM | 0.26.0, 0.27.0 | — |
Advisories 1
- WID-SEC-2026-3377 vllm: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Sep 15, 2026
References
- VDB-404470 | vllm-project vLLM MoRIIO Acknowledgement moriio_connector.py MoRIIOWrapper._handle_release_message resource consumption vdb-entry technical-description
- VDB-404470 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2026-92220 | CVE Analysis and Report third-party-advisory
- Submit #934149 | vLLM Project vLLM >=0.26.0 Denial of Service third-party-advisory
- https://github.com/vllm-project/vllm/pull/50674 issue-tracking patch
- https://github.com/vllm-project/vllm/ product