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VULNERABILITIES

CVE-2026-93436 Details

Description

vLLM through 0.29.0 fails to properly clean up decode-side metadata for rejected inference requests in prefill/decode disaggregated deployments. Remote attackers can submit requests with max_tokens=0 to exhaust decode-worker memory without bound until the worker restarts.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/vllm-project/vllm [email protected]
https://github.com/vllm-project/vllm/blob/v0.29.0/vllm/distributed/kv_transfer/kv_connector/v1/nixl/push_worker.py#L162-L181 [email protected]
https://github.com/vllm-project/vllm/pull/55677 [email protected]
https://www.vulncheck.com/advisories/vllm-through-0.29.0-memory-exhaustion-via-rejected-requests [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-401Missing Release of Memory after Effective Lifetime[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-93436
NVD Published Date:
Sep 17, 2026
NVD Last Modified:
Sep 22, 2026
Source:
[email protected]
CVE-2026-93436 Details - Not Deferred