---
title: "anyio — CVE-2026-63349"
description: "A privilege escalation flaw affects the PyPI package anyio. Affected versions: >= 4.14.0, < 4.14.2. Fixed from version 4.14.2."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-18-cve-2026-63349
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-18
dateModified: 2026-09-18
---
# anyio — CVE-2026-63349

A privilege escalation flaw affects the PyPI package anyio. Affected versions: >= 4.14.0, < 4.14.2. Fixed from version 4.14.2.

## What to do

Update anyio to 4.14.2 or later.

| Fact | Value |
| --- | --- |
| Package | anyio |
| Ecosystem | PyPI (Python) |
| Class | Privilege escalation |
| Affected versions | >= 4.14.0, < 4.14.2 |
| Fixed version | 4.14.2 |
| CVE | CVE-2026-63349 |
| GHSA | GHSA-3w57-8xmc-8v26 |
| Published on | September 18, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-3w57-8xmc-8v26](https://github.com/advisories/GHSA-3w57-8xmc-8v26) — GitHub Security Advisories
- [NVD — CVE-2026-63349](https://nvd.nist.gov/vuln/detail/CVE-2026-63349) — NVD

---

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