Improper Control of Generation of Code ('Code Injection')
Multiple direct static code injection vulnerabilities in MyCMS 0.9.8 and earlier allow remote attackers to inject arbitrary PHP code into (1) a _score.txt file via the score parameter, or (2) a _setby.txt file via a login cookie, which is then included by games.php. NOTE: programs that use games.php might include (a) snakep.php, (b) tetrisp.php, and possibly other site-specific files.
CWE-94 - Code Injection
Code injection is a type of vulnerability that allows an attacker to execute arbitrary code. This vulnerability fully compromises the machine and can cause a wide variety of security issues, such as unauthorized access to sensitive information, manipulation of data, denial of service attacks etc. Code injection is different from command injection in the fact that it is limited by the functionality of the injected language (e.g. PHP), as opposed to command injection, which leverages existing code to execute commands, usually within the context of a shell.