| Component | vLLM |
| Severity | high (CVSS 7.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Published (NVD) | 2026-09-18 |
| Last modified | 2026-09-28 |
| Affected versions | vllm < 0.28.0 |
| Fixed in | 0.28.0 |
| Weakness | CWE-129 |
| CISA KEV | not listed |
NVD description
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.
What to do
- Upgrade vLLM to
0.28.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-93592
- https://github.com/vllm-project/vllm/security/advisories/GHSA-25q3-v2hm-8vpf
- https://www.vulncheck.com/advisories/vllm-before-0.28.0-denial-of-service-via-negative-token-id
Read more
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