CVE-2026-93436 vLLM - Denial of Service

vLLM through 0.29.0 contains a denial of service caused by improper cleanup of decode-side metadata for rejected inference requests in prefill/decode disaggregated deployments, letting remote attackers exhaust decode-worker memory, exploit requires sending requests with max_tokens=0.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.76% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
17 September 2026
Updated
15 October 2026
Weakness
CWE-401

Vendor fix

Update to the latest version beyond 0.29.0.

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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