I’ve been planning to do this write-up for a while now, but I decided to wait for at least 40 days after reporting this bug before disclosing it, as it concerns the e-class software used by most universities in Greece. The bug reported here has indeed been fixed on the same day that I reported it, so the first part of this shouldn’t be possible anymore. I’m also glad to see my own university’s e-class has been updated to the latest version, which is safe against this. The e-class soft...
