WordPress WP Custom Pages Plugin 'url' Parameter Directory Traversal Vulnerability

Summary
This host is installed with WordPress WP Custom Pages Plugin and is prone to directory traversal vulnerability.
Impact
Successful exploitation could allow attackers to perform directory traversal attacks and read arbitrary files on the affected application. 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 input validation error in 'url' parameter to 'wp-content/plugins/wp-custom-pages/wp-download.php', which allows attackers to read arbitrary files via a ../(dot dot) sequences.
Affected
WordPress WP Custom Pages Version 0.5.0.1, Other versions may also be affected.
References