Is CVE-2026-116173 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116173?

CVE-2026-116173 has a CVSS v3 severity of MEDIUM (5.9).

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CVE-2026-116173

Description

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.