Is CVE-2026-100652 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-100652?

CVE-2026-100652 has a CVSS v3 severity of MEDIUM (5.9).

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CVE-2026-100652

Description

vLLM versions 0.22.0 through 0.23.0 fail to validate stop_token_ids against vocabulary bounds in Rust HTTP and gRPC frontends, allowing out-of-vocabulary token IDs to reach MinTokensLogitsProcessor. Attackers can submit requests with min_tokens greater than zero and out-of-vocabulary stop_token_ids to trigger CUDA tensor indexing failures that leave EngineCore in a fatal state requiring service restart.