Secruity vulnerability on the forum website

Hello!
I did not know who to contact about this so i just write it in this forum :slightly_smiling_face:
By manually trying something on your website i found a secruity vulnerability that someone might want to fix. (I did not use an automated tool and i did not do any harm or read any information) It would be helpful if a responsible person could send me his/her email (ideally with a proof that he is an admin so that i dont send the vulnerability to anyone that is not working for this website)
Do not worry this is NOT blackmail!

Kind regards,
Maurice