CVE-2023-0340 Information

Description

The Custom Content Shortcode WordPress plugin through 4.0.2 does not validate one of its shortcode attribute which could allow users with a contributor role and above to include arbitrary files via a traversal attack. This could also allow them to read non PHP files and retrieve their content. RCE could also be achieved if the attacker manage to upload a malicious image containing PHP code and then include it via the affected attribute on a default WP install authors could easily achieve that given that they have the upload_file capability.

Reference

https://wpscan.com/vulnerability/71956598-90aa-4557-947a-c4716674543d