CVE-2026-116172 vLLM 0.22.0 before 0.24.0 DoS via Rust gRPC CandidateTokens.top_n

What is CVE-2026-116172?

CVE-2026-116172 is a high-severity vulnerability in Vllm Vllm, published on 25 Oct 2026.

Official 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.

Weakness: CWE-20

Which versions are affected by CVE-2026-116172?

It affects 1 product.

Products include Vllm Vllm.

How do I fix CVE-2026-116172?

No fix has been published for CVE-2026-116172 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116172 being exploited?

There is no known exploitation of CVE-2026-116172 in the wild and no public exploit code.

Other vulnerabilities in Vllm Vllm

• CVE-2025-32444 vLLM Vulnerable to Remote Code Execution via Mooncake Integration Critical 10.0
• CVE-2026-22778 vLLM leaks a heap address when PIL throws an error Critical 9.8
• CVE-2025-47277 vLLM Allows Remote Code Execution via PyNcclPipe Communication Service Critical 9.8
• CVE-2024-11041 Remote Code Execution in vllm-project/vllm Critical 9.8
• CVE-2026-48746 vLLM: OpenAI auth bypass Critical 9.1

All Vllm Vllm vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• GitHub advisory
• How this page is made

Also known as GHSA-2hvf-qprp-xr9w, GHSA-rwfw-xvg3-3937.