All vulnerabilities
CVE-2026-116173GHSA-6pgw-f3pv-4h8q

vLLM 0.22.0 before 0.24.0 Denial of Service via gRPC output_candidates.token_ids

vllm-project vllm
Open in ThreatlineRecord JSON
CVSS
8.2High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)No scoreNo FIRST EPSS score in this snapshot yet
Fixed in0.24.0Fixed versionCVE List
Published25 Oct 2026Updated 25 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

vLLM from 0.22.0 before 0.24.0 contains a denial of service vulnerability that allows remote attackers to terminate EngineCore by bypassing logprob_token_ids limits in the Rust gRPC frontend. Attackers can send Generate or GenerateStream requests with output_logprobs enabled and more than 128 output_candidates.token_ids, triggering a fatal sampler exception that crashes the engine.

Text from CVE List

Affected versions 2

  • vllmaffected: 0.22.0 before 0.24.0CVE List
  • vllmunaffected: 0.24.0CVE List

References 2