CVE-2026-116173: vllm vllm

CVSS 8.2 (high) · published 2026-10-25

vLLM from 0.22.0 before 0.24.0 contains a denial of service vulnerability that allows remote attackers to terminate EngineCore by bypassing logprob_token_ids limits in the Rust gRPC frontend. Attackers can send Generate or GenerateStream requests with output_logprobs enabled and more than 128 output_candidates.token_ids, triggering a fatal sampler exception that crashes the engine.

Affected products (NVD): vllm vllm

Fixed in (NVD): 0.24.0

Weakness: CWE-20

Source: NVD CVE-2026-116173

References

• https://github.com/vllm-project/vllm/security/advisories/GHSA-6pgw-f3pv-4h8q
• https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-denial-of-service-via-grpc-output-candidates-token-ids

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