68kb, automatic image

Atleast the software is build on codeigniter (1.7.2). Keep in mind that this is software that has not been updates in 5 years, I have no idea about any known security issues with 1.7.2 but for the 2.x version of CI there have been security fixes.

A very quick look at the github page suggests that you may want to have a closer look at /themes/front/default/article.php, thats probably the file you need to edit.