---
title: "aiohttp — CVE-2026-111066"
description: "A denial of service flaw affects the PyPI package aiohttp. Affected versions: >= 2.0.0, < 3.14.4. Fixed from version 3.14.4."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-20-cve-2026-111066
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-20
dateModified: 2026-10-20
---
# aiohttp — CVE-2026-111066

A denial of service flaw affects the PyPI package aiohttp. Affected versions: >= 2.0.0, < 3.14.4. Fixed from version 3.14.4.

## What to do

Update aiohttp to 3.14.4 or later.

| Fact | Value |
| --- | --- |
| Package | aiohttp |
| Ecosystem | PyPI (Python) |
| Class | Denial of service |
| Affected versions | >= 2.0.0, < 3.14.4 |
| Fixed version | 3.14.4 |
| CVE | CVE-2026-111066 |
| GHSA | GHSA-9xw5-w5jj-pvcg |
| Published on | October 20, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-9xw5-w5jj-pvcg](https://github.com/advisories/GHSA-9xw5-w5jj-pvcg) — GitHub Security Advisories
- [NVD — CVE-2026-111066](https://nvd.nist.gov/vuln/detail/CVE-2026-111066) — NVD

---

Equivalent HTML page : https://inyourgeek.com/en/failles-de-securite/2026-10-20-cve-2026-111066
Published by InYourGeek — https://inyourgeek.com/en/a-propos
Method and safeguards : https://inyourgeek.com/en/methode
Full register : https://inyourgeek.com/en/failles-de-securite