---
title: "markdown-it — CVE-2026-111759"
description: "A denial of service flaw affects the npm package markdown-it. Affected versions: >= 15.0.0, < 15.0.2. Fixed from version 15.0.2. CVSS score 7.5."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-20-cve-2026-111759
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-20
dateModified: 2026-10-20
---
# markdown-it — CVE-2026-111759

A denial of service flaw affects the npm package markdown-it. Affected versions: >= 15.0.0, < 15.0.2. Fixed from version 15.0.2. CVSS score 7.5.

## What to do

Update markdown-it to 15.0.2 or later.

| Fact | Value |
| --- | --- |
| Package | markdown-it |
| Ecosystem | npm (JavaScript) |
| Class | Denial of service |
| Affected versions | >= 15.0.0, < 15.0.2 |
| Fixed version | 15.0.2 |
| CVSS | 7.5 |
| CVE | CVE-2026-111759 |
| GHSA | GHSA-r7fv-28h4-cvq7 |
| Published on | October 20, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-r7fv-28h4-cvq7](https://github.com/advisories/GHSA-r7fv-28h4-cvq7) — GitHub Security Advisories
- [NVD — CVE-2026-111759](https://nvd.nist.gov/vuln/detail/CVE-2026-111759) — NVD

---

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Method and safeguards : https://inyourgeek.com/en/methode
Full register : https://inyourgeek.com/en/failles-de-securite