CVE-2020-26523 Froala WYSIWYG Editor XSS Vulnerability

Medium 6.1 Published 2 Oct 2020 Updated 4 Aug 2024

An attacker can execute arbitrary scripts in the victim's browser by pasting malicious content into the Froala Editor.

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-2020-26523?

CVE-2020-26523 is a medium-severity cross-site scripting vulnerability in n/a, published on 2 Oct 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

Froala Editor before 3.2.2 allows XSS via pasted content.

Weakness: CWE-79

Which versions are affected by CVE-2020-26523?

2 open source packages ship an affected version, including froala/wysiwyg-editor. It affects 1 product.

Package	Affected	Fixed in
`froala/wysiwyg-editor` Packagist	All versions	`3.2.2`
`froala/wysiwyg-editor` Packagist	All versions	`3.2.2`

Products include Froala Froala Editor.

How do I fix CVE-2020-26523?

Upgrade froala/wysiwyg-editor to 3.2.2 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-2020-26523 being exploited?

There is no known exploitation of CVE-2020-26523 in the wild and no public exploit code.

Sources

Also known as GHSA-qrhq-x7xh-2784.