CVE-2026-116172

Summary

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.

Impact & exploitability

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Additional information

• NVD record
• https://github.com/vllm-project/vllm/security/advisories/GHSA-rwfw-xvg3-3937Advisory
• https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-dos-via-rust-grpc-candidatetokens-top-nAdvisory