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CVE-2026-100652

7.5, high

Vllm-project vllm Improper Input Validation Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.5, high high CVSS v3.1
EPSS, next 30 days
0.4% higher than 28.3% of scored CVEs
Exploitation
Exploit code published
Published
26 Sept 202621 days ago

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.

Details

Vendor
Vllm-project
Product
vllm
Weakness
CWE-20 (opens in a new tab)
Status
Analyzed
Updated
6 Oct 2026
Assigner
disclosure@vulncheck.com

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

References 2

Exploit code 1

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Vllm-project CVEs

Every Vllm-project CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-105759 Vllm-project vllm Uncontrolled Resource Consumption Vulnerability EPSS 0.3% 7.5, high
  • CVE-2026-103241 A flaw has been found in vllm-project vLLM up to 0.26.0 EPSS 0.7% 7.5, high
  • CVE-2026-100647 Vllm-project vllm Improper Input Validation Vulnerability EPSS 0.3% 7.5, high
  • CVE-2026-90554 Vllm-project vLLM Uncontrolled Resource Consumption Vulnerability EPSS 0.2% 7.5, high

Beyond this page

Is CVE-2026-100652 in your network?

This page tells you how dangerous CVE-2026-100652 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-100652 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.