---
title: "fast-jwt — CVE-2026-107722"
description: "A cryptographic weakness flaw affects the npm package fast-jwt. Affected versions: >= 6.2.0, <= 6.2.4. Fixed from version 6.3.0. CVSS score 9.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-08-cve-2026-107722
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-08
dateModified: 2026-10-08
---
# fast-jwt — CVE-2026-107722

A cryptographic weakness flaw affects the npm package fast-jwt. Affected versions: >= 6.2.0, <= 6.2.4. Fixed from version 6.3.0. CVSS score 9.8.

## What to do

Update fast-jwt to 6.3.0 or later.

| Fact | Value |
| --- | --- |
| Package | fast-jwt |
| Ecosystem | npm (JavaScript) |
| Class | Cryptographic weakness |
| Affected versions | >= 6.2.0, <= 6.2.4 |
| Fixed version | 6.3.0 |
| CVSS | 9.8 |
| CVE | CVE-2026-107722 |
| GHSA | GHSA-ww5h-9m49-7xx4 |
| Published on | October 8, 2026 |
| Severity | Critical |

## Sources

- [GitHub Security Advisory — GHSA-ww5h-9m49-7xx4](https://github.com/advisories/GHSA-ww5h-9m49-7xx4) — GitHub Security Advisories
- [NVD — CVE-2026-107722](https://nvd.nist.gov/vuln/detail/CVE-2026-107722) — NVD

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