Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vllm | Vllm | >= 0.22.0, < 0.24.0 |
Related Weaknesses (CWE)
References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-rwfw-xvg3-3937MitigationVendor Advisory
- https://www.vulncheck.com/advisories/vllm-0.22.0-before-0.24.0-dos-via-rust-grpcThird Party Advisory
FAQ
What is CVE-2026-116172?
CVE-2026-116172 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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. Atta...
How severe is CVE-2026-116172?
CVE-2026-116172 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-116172?
Check the references section above for vendor advisories and patch information. Affected products include: Vllm Vllm.