Outreach Project Tool 'CRM_path' Parameter Remote File Inclusion Vulnerability

Summary
The host is running Outreach Project Tool(OPT) and is prone to Remote File Inclusion vulnerability.
Impact
Successful exploitation could allow the remote attackers to include arbitrary files from local and remote resources to compromise a vulnerable server. Impact Level: Network.
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
Error is due to improper sanitization of user supplied input in 'CRM_path' parameter in 'opt/forums/Forum_Include/index.php' while including external files for processing.
Affected
Outreach Project Tool(OPT) version 1.2.7 and prior.
References