CVE-2026-93840

Fixed upstream EPSS <1%CVSS 3.7

vLLM before 0.29.0 validates allowed_token_ids against tokenizer length instead of model output logits width in SamplingParams._validate_allowed_token_ids(). Attackers can supply token IDs above the output vocabulary that pass validation, causing LogitBiasState to corrupt GPU logits state and allow concurrent requests to sample tokens outside their allowlists.

Published 2026-09-18 · CVE record · OSV

Products: vllm-project vllm

Fixed upstream