Vulnerability · Published Sep 16, 2026 · Assigned by VulDB
CVE-2026-92220vllm-project vLLM MoRIIO Acknowledgement moriio_connector.py MoRIIOWrapper._handle_release_message resource consumption
Medium 5.3
In plain English
A medium-severity uncontrolled resource consumption in vLLM from vllm-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| vllm-project | vLLM | 0.26.00.27.0 |
Weakness: CWE-400, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R
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