The vulnerability CVE-2025-26979 in Funnel Builder by FunnelKit arises from improper validation of filenames in PHP include/require statements, enabling PHP Local File Inclusion. This can allow an attacker to cause the application to include files from the local filesystem, potentially leading to sensitive information disclosure or code execution. The issue affects versions up to 3.9.0. The CVSS v3.1 score is 7.5, indicating high severity, with network attack vector, high impact on confidentiality, integrity, and availability, but requiring high attack complexity and user interaction.

Successful exploitation of this vulnerability could allow an attacker to read arbitrary files on the server, potentially exposing sensitive information, or execute malicious code depending on the included files. This impacts confidentiality, integrity, and availability of the affected system. However, no known exploits are reported in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor vendor communications for updates. Until a fix is available, restricting access to the vulnerable application and limiting user input that can influence file inclusion may reduce risk.