Description
remark-html is an open source nodejs library which compiles Markdown to HTML. In affected versions the documentation of remark-html has mentioned that it was safe by default. In practice the default was never safe and had to be opted into. That is, user input was not sanitized. This means arbitrary HTML can be passed through leading to potential XSS attacks. The problem has been patched in 13.0.2 and 14.0.1: `remark-html` is now safe by default, and the implementation matches the documentation. On older affected versions, pass `sanitize: true` if you cannot update.
Remediation
References
https://github.com/remarkjs/remark-html/commit/b75c9dde582ad87ba498e369c033dc8a350478c1
https://github.com/remarkjs/remark-html/releases/tag/14.0.1
https://github.com/remarkjs/remark-html/security/advisories/GHSA-9q5w-79cv-947m
https://www.npmjs.com/package/remark-html
Related Vulnerabilities
CVE-2017-5651 Vulnerability in maven package org.apache.tomcat:tomcat-coyote
CVE-2019-10768 Vulnerability in maven package org.webjars.npm:angular
CVE-2022-36894 Vulnerability in maven package org.jenkins-ci.plugins:clif-performance-testing
CVE-2022-25312 Vulnerability in maven package org.apache.any23:apache-any23
CVE-2020-12668 Vulnerability in maven package com.hubspot.jinjava:jinjava