web2py before 2.14.1, when using the standalone version, allows remote attackers to obtain environment variable values via a direct request to examples/template_examples/beautify. NOTE: this issue can be leveraged by remote attackers to gain administrative access.
https://usn.ubuntu.com/4030-1/
https://github.com/web2py/web2py/commit/9706d125b42481178d2b423de245f5d2faadbf40