CVE-2024-4268

The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's blocks in all versions up to, and including, 3.1.9 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. CVE-2024-37457 may be a duplicate of this issue.

The following products are affected by CVE-2024-4268 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-4268.

URL	Resource
https://gist.github.com/webber-naut/0a8a4f810da286392a43c4614d31712e
https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/advanced-heading/block.php
https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/how-to/block.php
https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/image-slider/block.php
https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/styled-box/block.php
https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/testimonial/block.php
https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/extensions/custom-css/class-custom-css.php?rev=3102541#L173
https://plugins.trac.wordpress.org/changeset/3075315/ultimate-blocks
https://plugins.trac.wordpress.org/changeset/3108401/
https://wordpress.org/plugins/ultimate-blocks/#developers
https://www.dropbox.com/scl/fi/zh7t1qsvxkxk2dfhwd7nn/Ultimate-Blocks-Stored-XSS_POC_4.20.24.mov?rlkey=ws16dcu7f6mjd3h9emsqev7jm&e=2&st=fdr7q9h7&dl=0
https://www.wordfence.com/threat-intel/vulnerabilities/id/00b60b53-77bf-4640-bf2b-84e011014623?source=cve