XOOPS 2.5.0 allows remote attackers to obtain sensitive information via a direct request to a .php file, which reveals the installation path in an error message, as demonstrated by modules/system/xoops_version.php and certain other files.
XOOPS 2.0, and possibly earlier versions, allows remote attackers to obtain sensitive information via an invalid xoopsOption parameter, which reveals the installation path in an error message.
Unspecified vulnerability in Hisanaga Electric Co, Ltd. hisa_cart 1.29 and earlier, a module for XOOPS, allows remote attackers to obtain sensitive user information via unknown vectors.