The phpMyAdmin development team reports:
It was possible to manipulate the PHP session superglobal using
some of the Swekey authentication code. This could open a path
for other attacks.
An unsanitized key from the Servers array is written in a comment
of the generated config. An attacker can modify this key by
modifying the SESSION superglobal array. This allows the attacker
to close the comment and inject code.
Through a possible bug in PHP running on Windows systems a NULL
byte can truncate the pattern string allowing an attacker to
inject the /e modifier causing the preg_replace function to
execute its second argument as PHP code.
Fixed filtering of a file path in the MIME-type transformation
code, which allowed for directory traversal.