CVE-2019-9737 Cross-Site Scripting in editor.md

Medium 6.1 Published Updated

An attacker can execute arbitrary scripts in the victim's browser via DOM-based XSS in the Editor.md markdown editor library.

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
None listed

What is CVE-2019-9737?

CVE-2019-9737 is a medium-severity cross-site scripting vulnerability in n/a, published on 13 Mar 2019. 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

Editor.md 1.5.0 has DOM-based XSS via vectors involving the '<EMBED SRC="data:image/svg+xml' substring.

Weakness: CWE-79

Which versions are affected by CVE-2019-9737?

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

PackageAffectedFixed in
editor.md npmAll versionsNone
editor.md npmAll versionsNone

Products include Ipandao Editor.md.

How do I fix CVE-2019-9737?

No fix has been published for CVE-2019-9737 yet. Limit exposure of the affected software until one is available.

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-2019-9737 being exploited?

There is no known exploitation of CVE-2019-9737 in the wild and no public exploit code.

Sources

Also known as GHSA-2j5v-fc74-j9q2.

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