The Hardened-PHP project has released another vulnerability today, this time for the popular phpMyAdmin database management package concerning an issue with the "error.php" file being open to an XSS vulnerability.
It was discovered that phpMyAdmin comes with a script to display error messages that supports displaying the error in a user supplied charset. Unfortunately the encoding of the error message is not taking the charset into account which can result into XSS when UTF-7 is selected. (Other charsets like US-ASCII can also be used to exploit this in some browsers.)
There is no proof of concept posted for this exploit and, since it only effects phpMyAdmin versions 18.104.22.168 and lower, it's suggested that you update to the latest release as soon as possible to correct the issue.