# Exploit Title: Cross site scripting(XSS) # Author: nu11secur1ty # Date: 02.27.2021 # Vendor: https://www.concrete5.org/download # Link: https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-3111 # CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3111 [Exploit] # Place - Navigate to entries directory concrete5-8.5.4/index.php/dashboard/express/entries/ # PoC - Copy and paste the int_string in to Handle field nu11secur1ty0000000111111100101010100100100100101010101 - fill in the remaining fields and save -- System Administrator - Infrastructure Engineer Penetration Testing Engineer Exploit developer at https://www.exploit-db.com/ https://www.nu11secur1ty.com/ hiPEnIMR0v7QCo/+SEH9gBclAAYWGnPoBIQ75sCj60E= nu11secur1ty <http://nu11secur1ty.com/>