Is CVE-2026-116174 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-116174?

CVE-2026-116174 has a CVSS v3 severity of MEDIUM (5.9).

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CVE-2026-116174

Description

vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC Generate and GenerateStream service that forwards unchecked prompt token IDs to EngineCore. Attackers can submit requests with out-of-vocabulary prompt.token_ids values to trigger a fatal embedding lookup failure that terminates EngineCore and leaves the server unhealthy.