CVE-2021-24208

WP Page Builder < 1.2.4 - Multiple Stored Cross-Site scripting (XSS)

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The editor of the WP Page Builder WordPress plugin before 1.2.4 allows lower-privileged users to insert unfiltered HTML, including JavaScript, into pages via the “Raw HTML” widget and the “Custom HTML” widgets (though the custom HTML widget requires sending a crafted request - it appears that this widget uses some form of client side validation but not server side validation), all of which are added via the “page_builder_data” parameter when performing the “wppb_page_save” AJAX action. It is also possible to insert malicious JavaScript via the “wppb_page_css” parameter (this can be done by closing out the style tag and opening a script tag) when performing the “wppb_page_save” AJAX action.

El editor del plugin de WordPress WP Page Builder versiones anteriores a 1.2.4, permite a usuarios menos privilegiados insertar HTML sin filtrar, incluido JavaScript, en las páginas por medio del widget "Raw HTML" y los widgets "Custom HTML" (aunque el widget HTML personalizado requiere el envío una petición diseñada (parece que este widget utiliza alguna forma de comprobación del lado del cliente pero no del lado del servidor), todos los cuales son agregados por medio del parámetro "page_builder_data" al realizar la acción AJAX "wppb_page_save". También es posible insertar JavaScript malicioso por medio del parámetro "wppb_page_css" (esto puede ser realizado al cerrar la etiqueta de estilo y abriendo una etiqueta de script) cuando se lleva a cabo la acción AJAX "wppb_page_save"

*Credits: Ramuel Gall

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

Low

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

2021-01-14 CVE Reserved
2021-04-05 CVE Published
2023-03-08 EPSS Updated
2024-08-03 CVE Updated
2024-08-03 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

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

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://wpscan.com/vulnerability/c20e243d-b0de-4ae5-9a0d-b9d02c9b8141	2024-08-03

URL	Date	SRC
https://www.themeum.com/wp-page-builder-updated-v1-2-4	2021-04-12

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Themeum Search vendor "Themeum"		Wp Page Builder Search vendor "Themeum" for product "Wp Page Builder"				< 1.2.4 Search vendor "Themeum" for product "Wp Page Builder" and version " < 1.2.4"		wordpress		Affected