---
title: "js-yaml — CVE-2026-84375"
description: "A denial of service flaw affects the npm package js-yaml. Affected versions: >= 4.0.0, < 4.3.2. Fixed from version 4.3.2. CVSS score 7.5."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-08-cve-2026-84375
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-08
dateModified: 2026-09-08
---
# js-yaml — CVE-2026-84375

A denial of service flaw affects the npm package js-yaml. Affected versions: >= 4.0.0, < 4.3.2. Fixed from version 4.3.2. CVSS score 7.5.

## What to do

Update js-yaml to 4.3.2 or later.

| Fact | Value |
| --- | --- |
| Package | js-yaml |
| Ecosystem | npm (JavaScript) |
| Class | Denial of service |
| Affected versions | >= 4.0.0, < 4.3.2 |
| Fixed version | 4.3.2 |
| CVSS | 7.5 |
| CVE | CVE-2026-84375 |
| GHSA | GHSA-2883-xcg3-v3hh |
| Published on | September 8, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-2883-xcg3-v3hh](https://github.com/advisories/GHSA-2883-xcg3-v3hh) — GitHub Security Advisories
- [NVD — CVE-2026-84375](https://nvd.nist.gov/vuln/detail/CVE-2026-84375) — NVD

---

Equivalent HTML page : https://inyourgeek.com/en/failles-de-securite/2026-09-08-cve-2026-84375
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