All vulnerabilities
CVE-2026-100652GHSA-qff2-492f-9fm4

vLLM 0.22.0 through 0.23.0 Denial of Service via stop_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)0.36%Chance of exploitation activity in the next 30 days, higher than 28% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.24.0Fixed versionCVE List
Published26 Sep 2026Updated 28 Sep 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 versions 0.22.0 through 0.23.0 fail to validate stop_token_ids against vocabulary bounds in Rust HTTP and gRPC frontends, allowing out-of-vocabulary token IDs to reach MinTokensLogitsProcessor. Attackers can submit requests with min_tokens greater than zero and out-of-vocabulary stop_token_ids to trigger CUDA tensor indexing failures that leave EngineCore in a fatal state requiring service restart.

Text from CVE List

Affected versions 2

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

References 2