Gibbon before 29.0.00 allows CSRF.
Cross Site Scripting vulnerability in Gibbon before v.27.0.01 and fixed in v.28.0.00 allows a remote attacker to obtain sensitive information via the email parameter found in /Gibbon/modules/User Admin/usermanageeditProcess.php.
Gibbon through 26.0.00 allows remote authenticated users to conduct PHP deserialization attacks via columnOrder in a POST request to the modules/System%20Admin/importrun.php&type=externalAssessment&step=4 URI.