CVE-2021-39348

LearnPress – WordPress LMS Plugin <= 4.1.3.1 Authenticated Stored Cross-Site Scripting

Severity Score

4.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $custom_profile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 4.1.3.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled. Please note that this is seperate from CVE-2021-24702.

El plugin LearnPress de WordPress es vulnerable a un ataque de tipo Cross-Site Scripting Almacenado debido a un escape insuficiente en el parámetro $custom_profile que se encuentra en el archivo ~/inc/admin/views/backend-user-profile.php y que permite a atacantes con acceso de usuario administrativo inyectar scripts web arbitrarios, en versiones hasta la 4.1.3.1 incluyéndola. Esto afecta a las instalaciones multi-sitio donde unfiltered_html está deshabilitado para los administradores, y los sitios donde unfiltered_html está deshabilitado. Tenga en cuenta que esto es independiente de CVE-2021-24702

*Credits: Thinkland Security Team

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-08-20 CVE Reserved
2021-10-18 CVE Published
2023-05-14 EPSS Updated
2024-09-17 CVE Updated
2024-09-17 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CAPEC

References (3)

URL	Tag	Source
https://wordfence.com/vulnerability-advisories/#CVE-2021-39348	Third Party Advisory

URL	Date	SRC
https://github.com/BigTiger2020/word-press/blob/main/LearnPress.md	2024-09-17

URL	Date	SRC
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614592%40learnpress&new=2614592%40learnpress&sfp_email=&sfph_mail=	2022-08-05

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Thimpress Search vendor "Thimpress"		Learnpress Search vendor "Thimpress" for product "Learnpress"				<= 4.1.3.1 Search vendor "Thimpress" for product "Learnpress" and version " <= 4.1.3.1"		wordpress		Affected