CVE-2026-116180 vLLM - Denial of Service

vLLM 0.8.5 before 0.31.0 contains a denial of service caused by uninitialized int32 tensor allocation and unwritten prompt positions in the V1 model runner, letting clients crash EngineCore via crafted prompt_logprobs, exploit requires client sharing the engine.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Published
25 October 2026
Updated
26 October 2026
Weakness
CWE-908

Vendor fix

Update to version 0.31.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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