Bypass check length at Add Folder feature lead to XSS in module=evvtgendoc

Description I found Stored XSS on https://demo.corebos.com/index.php?action=index&module=evvtgendoc after I was Add Folder Proof of Concept Step 1: Go to Documents function https://demo.corebos.com/index.php?action=index&module=Documents , click Add Folder. Step 2: Intercept request by Burpsuite...