---
id: CVE-2026-90713
title: A security flaw has been discovered in vllm-project vLLM up to 0.29.0
summary: >-
  A security flaw has been discovered in vllm-project vLLM up to 0.29.0. The
  affected element is the function TiktokenTokenizer::new of the file
  rust/src/text/src/backend/hf/mod.rs of the component tiktoken vocab File
  Handler. The manipula…
severity: low
cvss: 3.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-404
  - CWE-770
vendor: vllm-project
product: vLLM
affected:
  - vLLM 0.1
  - vLLM 0.2
  - vLLM 0.3
  - vLLM 0.4
  - vLLM 0.5
  - vLLM 0.6
  - vLLM 0.7
  - vLLM 0.8
  - vLLM 0.9
  - vLLM 0.10
  - vLLM 0.11
  - vLLM 0.12
  - vLLM 0.13
  - vLLM 0.14
  - vLLM 0.15
  - vLLM 0.16
  - vLLM 0.17
  - vLLM 0.18
  - vLLM 0.19
  - vLLM 0.20
  - vLLM 0.21
  - vLLM 0.22
  - vLLM 0.23
  - vLLM 0.24
  - vLLM 0.25
  - vLLM 0.26
  - vLLM 0.27
  - vLLM 0.28
  - vLLM 0.29.0
published: '2026-09-14'
updated: '2026-09-15'
sourceUpdated: '2026-09-15T14:17:33.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90713'
references:
  - url: 'https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/issues/50954'
    label: cna@vuldb.com
  - url: 'https://github.com/vllm-project/vllm/pull/51135'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-90713'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/918762'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403267'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/403267/cti'
    label: cna@vuldb.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90713.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-90713'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2533014'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-90713'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90713'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-15T13:42:11.312446Z'
epss: 0.0016
epssPercentile: 0.05114
ingestedAt: '2026-09-14T15:23:07.453Z'
---

## Overview

A security flaw has been discovered in vllm-project vLLM up to 0.29.0. The affected element is the function TiktokenTokenizer::new of the file rust/src/text/src/backend/hf/mod.rs of the component tiktoken vocab File Handler. The manipulation results in denial of service. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Low · affected: Ansible Automation Orchestrator 2026, Exploit Intelligence, Lightspeed Core, Migration Toolkit for Applications 8, OpenShift Lightspeed, Red Hat AI Inference Server, … · no fix planned: Exploit Intelligence, Red Hat Ansible Automation Platform 2, Ansible Automation Orchestrator 2026, Lightspeed Core, … · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-90713.json)