CVE-2020-15930 Cross-site Scripting in Joplin

Medium 6.1 Published Updated

An XSS vulnerability in Joplin desktop allows attackers to execute arbitrary code via malicious HTML embed tags.

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-2020-15930?

CVE-2020-15930 is a medium-severity cross-site scripting vulnerability in n/a, published on 24 Sep 2020. 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

An XSS issue in Joplin desktop 1.0.190 to 1.0.245 allows arbitrary code execution via a malicious HTML embed tag.

Weakness: CWE-79

Which versions are affected by CVE-2020-15930?

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

PackageAffectedFixed in
joplin npmFrom 1.0.1901.1.7
joplin npmFrom 1.0.1901.1.7

Products include Joplin Project Joplin.

How do I fix CVE-2020-15930?

Upgrade joplin to 1.1.7 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-2020-15930 being exploited?

There is no known exploitation of CVE-2020-15930 in the wild and no public exploit code.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as GHSA-cgc7-mwp4-3ccx.

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