CodePen Embed Block

CodePen Embed Block has one disclosed vulnerability in the WordSec catalog, all reported in 2025; it is fixed as of September 2026. Their average CVSS score is 4.4, and the most serious one scores 4.4 out of 10.

The most common weakness is Cross-Site Scripting, behind 1 of the records (100%).

The one issue recorded for CodePen Embed Block has a vendor fix available, so running the current release closes it.

All of these findings were reported by Nabil Irawan. CodePen Embed Block is installed on roughly 600 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 6.7.7.

Strategic Overview

Avg CVSSMedium

4.4/ 10

Patch Coverage100%

Open

Fixed

Get automatic notifications for all CodePen Embed Block vulnerabilities before they are exploited.

Highest severity on recordCVSS 4.4CVE-2025-50023

CodePen Embed Block <= 1.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting

Read the full analysis

Vulnerability Records

1 records


2025-06-19 00:00	CodePen Embed Block <= 1.2.0 - Authenticated (Administrator+) Stored Cross-Site Scripting CodePen Embed Block <= 1.2.0	`CVE-2025-50023`	4.4 Medium	Nabil Irawan	Yes

Showing 1–1 of 1 reports

Plugin Profile

Latestv1.2.1

CodePen Embed Block

Author

Chris Coyier

5.0(2)

100/100

Last Updated

2026-08-21 (22d ago)

Active Installs

600+

Downloads

14,583

Requires WP

5.1+

Requires PHP

7.2+

Tested up to

WP 6.7.7

Created

2020-01-17 (7y ago)

CodePen is an online code editor for front-end development. You build things (we call them Pens) with HTML, CSS, and JavaScript, and the languages and libraries that go along with those. Any Pen can be embedded on another site, making them useful for blog posts, documentation, forums, etc. This block makes it easy to embed them. While oEmbed (just paste in a Pen URL!) also works for CodePen embeds in the block editor, this plugin allows for much more control, like setting the the height, theme, and default tabs.

View on WordPress.org