CVE-2026-93592

HIGH 7.5

vLLM before 0.28.0 Denial of Service via negative token ID

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-129
Vendor	vllm-project
Product	vllm
Published	Sep 18, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

vllm-project / vllm

0 < 0.28.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/vllm-project/vllm/security/advisories/GHSA-25q3-v2hm-8vpf vulncheck.com: https://www.vulncheck.com/advisories/vllm-before-0.28.0-denial-of-service-via-negative-token-id

Credits

🔍 ECMGit YixinZ2004 jperezdealgaba