CVE-2021-36863

WordPress Quiz And Survey Master plugin <= 7.3.4 - Auth. Stored Cross-Site Scripting (XSS) vulnerability

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Auth. (contributor+) Stored Cross-Site Scripting (XSS) vulnerability in ExpressTech Quiz And Survey Master plugin <= 7.3.4 on WordPress.

Autenticación. (colaborador+) Vulnerabilidad de Stored Cross-Site Scripting (XSS) en el complemento ExpressTech Quiz And Survey Master

The Quiz And Survey Master plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in versions up to, and including, 7.3.4 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

*Credits: Vulnerability discovered by Ngo Van Thien (Patchstack Alliance)

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

Single

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-07-19 CVE Reserved
2022-10-21 CVE Published
2024-05-13 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source
https://patchstack.com/database/vulnerability/quiz-master-next/wordpress-quiz-and-survey-master-plugin-7-3-4-auth-stored-cross-site-scripting-xss-vulnerability?_s_id=cve	Third Party Advisory
https://wordpress.org/plugins/quiz-master-next/#developers	Product

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Expresstech Search vendor "Expresstech"		Quiz And Survey Master Search vendor "Expresstech" for product "Quiz And Survey Master"				<= 7.3.4 Search vendor "Expresstech" for product "Quiz And Survey Master" and version " <= 7.3.4"		wordpress		Affected