CVE-2026-78566: Shuffle <= 1.8 - Unauthenticated Local File Inclusion
The Shuffle theme for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 1.8. This makes it possible for unauthenticated attackers to include and execute arbitrary files on the server, allowing the execution of any PHP code in those files. This can be used to bypass access controls, obtain sensitive data, or achieve code execution in cases where images and other “safe” file types can be uploaded and included.
Affected Software
Event History
Frequently Asked Questions
Which installations are affected?
WordPress sites using the Shuffle theme are affected if the theme version is 1.8 or earlier.
Does exploitation require an account or user interaction?
No. The vulnerability is described as exploitable by unauthenticated attackers and does not require user interaction.
What conditions can make the impact worse?
Impact can include PHP code execution when an attacker can cause files to be present on the server and include them. The description specifically notes cases where images or other ostensibly safe file types can be uploaded and then included.