CVE-2026-116173
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.
- Score
- CVSS 4.0 8.2 High
- Status
- Analyzed - disclosure@vulncheck.com
- Published
- 2026-10-25
- Last modified
- 2026-10-28
- Weaknesses
- CWE-20
Affected products
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
