The Aalto WordPress theme is vulnerable to Local File Inclusion, which could allow an authenticated attacker to access sensitive server files.

This vulnerability is a PHP Local File Inclusion (CWE-98) flaw occurring due to improper validation of filenames in include/require statements. It requires the attacker to have at least low-level authenticated access to the WordPress instance.

The vulnerability carries a CVSS score of 7.5 (High), reflecting the potential for significant impact on confidentiality, integrity, and availability. Successful exploitation allows an attacker to read arbitrary files from the server, potentially exposing configuration files, database credentials, or sensitive application code, which could lead to a full system compromise.

Immediate Action: No patch is currently available; administrators should deactivate the Aalto theme until a secure update is released by the vendor.

Proactive Monitoring: Monitor server access logs for requests containing directory traversal patterns or unusual file inclusion attempts targeting PHP files.

Compensating Controls: Implement a Web Application Firewall (WAF) rule to block requests containing path traversal sequences (e.g., "../") directed at the theme's directory.

Public Exploit Available: No

Given the high CVSS severity and the current lack of a vendor-provided patch, this vulnerability poses a significant risk to site security. Administrators are strongly advised to prioritize the removal or deactivation of the affected theme until a security update is officially released and verified.