vLLMPublished 25 Oct 2026NVD status: Received

CVE-2026-116172

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.

ComponentvLLM
Severitymedium (CVSS 5.9)
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Published (NVD)2026-10-25
Affected versions
>= 0.22.0, < 0.24.0
from the CVE Program record written by the CNA that assigned the CVE
Fixed in0.24.0
WeaknessCWE-20
CISA KEVnot listed

NVD 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.

What to do

  • Upgrade vLLM to 0.24.0 or later.
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

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