What is GHSA-wx77-rp39-c6vg?

GHSA-wx77-rp39-c6vg is a security advisory published by GitHub Security Advisories with Low severity. Regular Expression Denial of Service in markdown

Why does GHSA-wx77-rp39-c6vg 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-wx77-rp39-c6vg?

GHSA-wx77-rp39-c6vg affects 1 product, including: npm/markdown:\u003e= 0.0.0.

GHSA-wx77-rp39-c6vgLowDisclosed before NVD

Regular Expression Denial of Service in markdown

Vendor

GitHub Security Advisories

Published

September 4, 2020

Last Modified

January 9, 2023

📋 Description

All versions of markdown are vulnerable to Regular Expression Denial of Service (ReDoS). The markdown.toHTML() function has significantly degraded performance when parsing long strings containing underscores. This may lead to Denial of Service if the parser accepts user input.

Recommendation

No fix is currently available. Consider using an alternative package until a fix is made available.

🎯 Affected products1

npm/markdown:>= 0.0.0

🔗 References (2)

https://www.npmjs.com/advisories/1330
https://github.com/advisories/GHSA-wx77-rp39-c6vg