---
title: "knowns — CVE-2026-86540"
description: "A remote code execution flaw affects the npm package knowns. Affected versions: <= 0.29.1. Fixed from version 0.30.0. CVSS score 7.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-06-cve-2026-86540
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-06
dateModified: 2026-10-06
---
# knowns — CVE-2026-86540

A remote code execution flaw affects the npm package knowns. Affected versions: <= 0.29.1. Fixed from version 0.30.0. CVSS score 7.8.

## What to do

Update knowns to 0.30.0 or later.

| Fact | Value |
| --- | --- |
| Package | knowns |
| Ecosystem | npm (JavaScript) |
| Class | Remote code execution |
| Affected versions | <= 0.29.1 |
| Fixed version | 0.30.0 |
| CVSS | 7.8 |
| CVE | CVE-2026-86540 |
| GHSA | GHSA-mc52-mwq4-vfx3 |
| Published on | October 6, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-mc52-mwq4-vfx3](https://github.com/advisories/GHSA-mc52-mwq4-vfx3) — GitHub Security Advisories
- [NVD — CVE-2026-86540](https://nvd.nist.gov/vuln/detail/CVE-2026-86540) — NVD

---

Equivalent HTML page : https://inyourgeek.com/en/failles-de-securite/2026-10-06-cve-2026-86540
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