FreePHPBlogSoftware 'default_theme.php' Remote File Inclusion Vulnerability

Summary
This host is running FreePHPBlogSoftware and is prone to remote file inclusion Vulnerability
Impact
Successful exploitation will allow remote attackers to include arbitrary remote file containing malicious PHP code and execute it in the context of the webserver process. Impact Level: Application.
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
The flaw is due to error an in 'default_theme.php' script, which fails to properly sanitize user input supplied to the 'phpincdir' parameter.
Affected
FreePHPBlogSoftware version 1.0
References