The Divi Ajax Filter plugin for WordPress is vulnerable to Local File Inclusion in all versions up to, and including, 5.1.2 via the 'custom_loop_template' parameter parameter. This makes it possible for unauthenticated attackers to include and execute arbitrary .php 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 .php file types can be uploaded and included. This vulnerability is only exploitable when the loop_templates parameter is set to 'custom-template'.

CVE-2026-11613 is a Local File Inclusion (LFI) vulnerability affecting the Divi Ajax Filter plugin for WordPress in all versions up to and including 5.1.2. The vulnerability exists in the 'custom_loop_template' parameter and allows unauthenticated attackers to include and execute arbitrary PHP files on the server. Exploitation requires the 'loop_templates' parameter to be set to 'custom-template'. Successful exploitation can lead to bypass of access controls, sensitive data disclosure, and remote code execution if PHP files can be uploaded to the server. The vulnerability is exploitable without authentication, significantly raising its risk level. WordPress site administrators using this plugin are advised to update immediately to a patched version.