A vulnerability classified as critical has been found in slackero phpwcms up to 1.9.45/1.10.8. Affected is the function isfile/getimagesize of the file imageresized.php. The manipulation of the argument imgfile leads to deserialization. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.9.46 and 1.10.9 is able to address this issue. It is recommended to upgrade the affected component.