Description
vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC converter that allows remote attackers to bypass max_logprobs limits via CandidateTokens.top_n. Attackers can send Generate or GenerateStream requests with oversized or integer-wrapping top_n values to trigger torch.topk failures that terminate EngineCore.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vllm-project | vllm | 0.22.0 – < 0.24.0 | 0.24.0 |
Advisories 1
- WID-SEC-2026-3828 vllm: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
References
- GitHub Security Advisory (GHSA-rwfw-xvg3-3937) vendor-advisory
- VulnCheck Advisory: vLLM 0.22.0 before 0.24.0 DoS via Rust gRPC CandidateTokens.top_n third-party-advisory