---
title: "tornado — CVE-2026-103262"
description: "A denial of service flaw affects the PyPI package tornado. Affected versions: <= 6.5.8. Fixed from version 6.5.9. CVSS score 7.5."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-30-ghsa-chx6-46f5-w4vp
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-30
dateModified: 2026-09-30
---
# tornado — CVE-2026-103262

A denial of service flaw affects the PyPI package tornado. Affected versions: <= 6.5.8. Fixed from version 6.5.9. CVSS score 7.5.

## What to do

Update tornado to 6.5.9 or later.

| Fact | Value |
| --- | --- |
| Package | tornado |
| Ecosystem | PyPI (Python) |
| Class | Denial of service |
| Affected versions | <= 6.5.8 |
| Fixed version | 6.5.9 |
| CVSS | 7.5 |
| CVE | CVE-2026-103262 |
| GHSA | GHSA-chx6-46f5-w4vp |
| Published on | September 30, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-chx6-46f5-w4vp](https://github.com/advisories/GHSA-chx6-46f5-w4vp) — GitHub Security Advisories
- [NVD — CVE-2026-103262](https://nvd.nist.gov/vuln/detail/CVE-2026-103262) — NVD

---

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