Resource exhaustion in vLLM - CVE-2026-94624
Published: November 9, 2026
Vulnerability identifier: #VU162987
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-94624
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a low-privileged remote attacker to terminate vLLM's inference service through ZeroMQ socket exhaustion.
The vulnerability exists due to retention of never-established peer sessions when OffloadingConnector uses TieringOffloadingSpec with a P2P secondary tier. A low-privileged remote attacker can submit requests containing unique non-listening peer addresses in kv_transfer_params.prefill, using a normal API key when authentication is enabled, to exhaust sockets and shut down the API server.
Affected software
vLLM
How to mitigate CVE-2026-94624
Install security update from vendor's website.
vLLM - update to 0.32.0