CVE-2017-16006 XSS in Data URI in remarkable

Medium 6.1 Published 4 Jun 2018 Updated 17 Sep 2024

Attackers can execute arbitrary JavaScript via data URIs in links, affecting applications using the Remarkable markdown parser.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2017-16006?

CVE-2017-16006 is a medium-severity cross-site scripting vulnerability in HackerOne remarkable node module, published on 4 Jun 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Remarkable is a markdown parser. In versions 1.6.2 and lower, remarkable allows the use of `data:` URIs in links and can therefore execute javascript.

Weakness: CWE-79

Which versions are affected by CVE-2017-16006?

2 open source packages ship an affected version, including remarkable. It affects 1 product.

Package	Affected	Fixed in
`remarkable` npm	All versions	`1.7.0`
`remarkable` npm	All versions	`1.7.0`

Products include Remarkable Project Remarkable.

How do I fix CVE-2017-16006?

Upgrade remarkable to 1.7.0 or later.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2017-16006 being exploited?

There is no known exploitation of CVE-2017-16006 in the wild and no public exploit code.

Sources

Also known as GHSA-mrmf-qwxg-7c3h.