I have released a security update which came to my attention yesterday. Information relating to the security issue is below.
Affected: PHP-Nuke 6.5-7.6 / PHP-Nuke Platinum 6.9.0-7.6.0 / PHP-Nuke Patched 2.8 / phpBB 2.0.11.
Description: phpBB administrative variable manipulation can allow illegal server path disclosure.
Correction method: Available here