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CVE-2026-93592

vLLM before 0.28.0 Denial of Service via negative token ID

CVSS 4.0 8.7 HIGHCVSS 3.1 7.5 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-93592

Published

vLLM versions before 0.28.0 fail to validate the lower bound of token IDs in the /v1/embeddings and /pooling endpoints, allowing unauthenticated attackers to crash the engine by submitting negative token IDs. A single request with a negative token ID triggers a CUDA device-side assertion that poisons the GPU context, causing all subsequent requests to fail until the process restarts.

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Affected versions, risk and source history

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CVE-2026-93592 · CVE overview and exploitation status

cve-program · CVE-2026-93592

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