Vulnerability Details CVE-2026-116174
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.8%
CVSS Severity
CVSS v3 Score 5.9
References