Unsafe defaults in `remark-html`

Description

The documentation of remark-html has mentioned that it was safe by default. In practise the default was never safe and had to be opted into. This means arbitrary HTML can be passed through leading to potential XSS attacks.

Recommendation

Update the remark-html package to the latest compatible version. Followings are version details:

• Affected version(s): **= 14.0.0

  < 13.0.2**

• Patched version(s): **14.0.1

  13.0.2**

References

• GHSA-9q5w-79cv-947m
• www.npmjs.com
• CVE-2021-39199
• CWE-79
• CAPEC-310
• OWASP 2021-A3
• OWASP 2021-A6

Related Issues

• Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML - CVE-2021-41164
• Improper Input Validation in sanitize-html - CVE-2021-26539
• Improper Input Validation in sanitize-html - sanitize-html - CVE-2021-26540
• html-parse-stringify and html-parse-stringify2 vulnerable to Regular expression denial of service (ReDoS) - CVE-2021-23346

You might also like:

How to Secure your NodeJs Express Javascript Application - part 1

How to Secure your NodeJs Express Javascript Application - part 2

10 Secure Coding Best Practices to Follow in Every Project

Tags:

npm

remark-html