What is GHSA-pxmp-fwjc-4x7q?

GHSA-pxmp-fwjc-4x7q is a security advisory published by GitHub Security Advisories with Medium severity. HTML Injection in marky-markdown

Why does GHSA-pxmp-fwjc-4x7q have no CVE ID yet?

GitHub Security Advisories published this advisory directly to customers before NVD assigned a CVE ID. This is the embargo-window disclosure pattern — vendors notify customers on day 0; NVD's public record follows days to weeks later.

Which products are affected by GHSA-pxmp-fwjc-4x7q?

GHSA-pxmp-fwjc-4x7q affects 1 product, including: npm/marky-markdown:\u003e= 0.0.0.

GHSA-pxmp-fwjc-4x7qMediumDisclosed before NVD

HTML Injection in marky-markdown

Vendor

GitHub Security Advisories

Published

September 3, 2020

Last Modified

January 9, 2023

📋 Description

All versions of marky-markdown are vulnerable to HTML Injection due to a validation bypass. The package only allows iframes where the source is youtube.com but it is possible to bypass the validation with sources where youtube.com is the sub-domain, such as youtube.com.evil.co. This

Recommendation

This package is no longer maintained. Please upgrade to @npmcorp/marky-markdown

🎯 Affected products1

npm/marky-markdown:>= 0.0.0

🔗 References (2)

https://www.npmjs.com/advisories/1471
https://github.com/advisories/GHSA-pxmp-fwjc-4x7q