highlight.php in (1) RUNCMS 1.1A, (2) CIAMOS 0.9.2 RC1, (3) e-Xoops 1.05 Rev3, and possibly other products based on e-Xoops (exoops), allows remote attackers to read arbitrary PHP files by specifying the pathname in the file parameter, as demonstrated by reading database configuration information from mainfile.php.