CVE-2026-93592

Summary

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.

Affected Software

Weaknesses

• CWE-129: Improper Validation of Array Index

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: partial

Additional References

• https://github.com/vllm-project/vllm/security/advisories/GHSA-25q3-v2hm-8vpf

References

• 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

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