Cross-site Scripting (XSS) Affecting moemark package, versions *



    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High

    Threat Intelligence

    Exploit Maturity Mature

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  • Snyk ID SNYK-JS-MOEMARK-1083284
  • published 9 Mar 2021
  • disclosed 10 Dec 2017
  • credit silviavali

Introduced: 10 Dec 2017

CVE NOT AVAILABLE CWE-79 Open this link in a new tab

How to fix?

There is no fixed version for moemark.


moemark is a Moeditor's markdown parser, forked from marked.

Affected versions of this package are vulnerable to Cross-site Scripting (XSS). Malicious JavaScript can be inserted as part of a .md file. This can be leveraged to execute arbitrary commands on a victim's system due to nodeIntegration being enabled on moeditor. This issue exists due to no sanitization in momark.


<onmouseover="alert(1)"> <s onmouseover="var os = require('os'); var hostname = os.platform(); var homedir = os.homedir(); alert('Host:' + hostname + 'directory: ' + homedir);">Hallo</s>