---
title: "markdown-it — CVE-2026-111758"
description: "A denial of service flaw affects the npm package markdown-it. Affected versions: >= 14.1.0, < 14.3.3. Fixed from version 14.3.3. CVSS score 7.5."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-10-20-cve-2026-111758
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-10-20
dateModified: 2026-10-20
---
# markdown-it — CVE-2026-111758

A denial of service flaw affects the npm package markdown-it. Affected versions: >= 14.1.0, < 14.3.3. Fixed from version 14.3.3. CVSS score 7.5.

## What to do

Update markdown-it to 14.3.3 or later.

| Fact | Value |
| --- | --- |
| Package | markdown-it |
| Ecosystem | npm (JavaScript) |
| Class | Denial of service |
| Affected versions | >= 14.1.0, < 14.3.3 |
| Fixed version | 14.3.3 |
| CVSS | 7.5 |
| CVE | CVE-2026-111758 |
| GHSA | GHSA-gfr2-rv44-r23c |
| Published on | October 20, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-gfr2-rv44-r23c](https://github.com/advisories/GHSA-gfr2-rv44-r23c) — GitHub Security Advisories
- [NVD — CVE-2026-111758](https://nvd.nist.gov/vuln/detail/CVE-2026-111758) — NVD

---

Equivalent HTML page : https://inyourgeek.com/en/failles-de-securite/2026-10-20-cve-2026-111758
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