These are the issue categories that can be raised against a teaching resource.

Code	Description	Count
sql-injection	SQL statements appear to be including unfiltered user input in a way that risks running unauthorised SQL against the database.	34
deprecated-library	The resource makes use of a library that is officially deprecated.	30
password-clear	Passwords are being stored in plaintext, rather than using an appropriate hashing algorithm.	10
password-inadequate-hashing	Passwords are being stored using an inappropriate hashing algorithm, such as MD5 or SHA1.	4
sql-needs-parameterisation	Whilst the resource may not specifically be at risk of SQL injection, it could do with making use of query parameterisation.	4
variable-injection	It is possible to present user input to a code example that would modify program variables in a way the author did not intend.	1
upload-arbitrary-file	If an upload feature permits a PHP script to be uploaded to a world-accessable address on a web server, it is likely to allow arbitrary (malicious) code to be run on the server.	0
uncategorised	An issue that doesn't have a specific category.	0
xss	The resource may permit user input to be rendered as unauthorised JavaScript in a way that may permit session hijacking.	0
email-header-injection	Copying values straight from user input to email headers can result in miscreants sending strings containing newlines together with their own headers, such as a To or Bcc field. This allows a remote attacker to turn a web server into a spam relay.	0