# CodePen embed no longer working

**URL:** https://meta.discourse.org/t/codepen-embed-no-longer-working/386399
**Category:** Support
**Tags:** onebox, embedding
**Created:** [October 22, 2025, 5:06am UTC](https://meta.discourse.org/t/codepen-embed-no-longer-working/386399 "2025-10-22T05:06:23Z")
**Posts on this page:** 1
**Showing post:** 3

<div class="post-metadata">

### Author: ![Moin](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/moin/32/554653_2.png) [@Moin](https://meta.discourse.org/u/Moin)
#### Post date: [October 22, 2025, 9:03am UTC](https://meta.discourse.org/t/codepen-embed-no-longer-working/386399/3 "2025-10-22T09:03:26Z")

</div>

The CodePen entry in `allowed_iframes` was changed a few months ago in [Security fixes for main by tgxworld · Pull Request #33117 · discourse/discourse · GitHub](https://github.com/discourse/discourse/pull/33117)

 ![Screenshot_20251022_110154_Firefox](https://global.discourse-cdn.com/meta/original/4X/d/2/e/d2e7c143719b48a545242f3f86c76a9db9df4edd.jpeg)

Maybe your links don’t match the new allowed format.

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_[View the full topic](https://meta.discourse.org/t/codepen-embed-no-longer-working/386399)._