EUVD-2026-80081
GHSA-72xc-v4m3-9r7g
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from Vendor (VulDB) · only source for this CVE.
CVSS VectorVendor: VulDB
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Unbounded buffering of unacknowledged KV-transfer acknowledgements in the MoRIIO connector of vLLM 0.26.0 and 0.27.0 allows a remote, unauthenticated client to grow worker memory indefinitely and degrade or crash LLM inference serving. The root cause is CWE-400 uncontrolled resource consumption in moriio_connector.py, where acknowledgements whose transfer mapping is not yet populated are appended to _pending_unmapped_acks with no TTL or size cap across request_finished, get_finished and _handle_release_message. …
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Same weakness CWE-400 – Uncontrolled Resource Consumption
View allSame technique Denial Of Service
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External POC / Exploit Code
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