CVE-2021-4418

Custom CSS, JS & PHP <= 2.0.7 - Cross-Site Request Forgery Bypass

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track

*SSVC

Descriptions

The Custom CSS, JS & PHP plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.0.7. This is due to missing or incorrect nonce validation on the save() function. This makes it possible for unauthenticated attackers to save code snippets via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

El complemento Custom CSS, JS & PHP para WordPress es vulnerable a Cross-Site Request Forgery (CSRF) en versiones hasta la 2.0.7 incluida. Esto se debe a una validación nonce faltante o incorrecta en la función save(). Esto hace posible que atacantes no autenticados guarden fragmentos de código a través de una solicitud falsificada, siempre que puedan engañar al administrador del sitio para que realice una acción como hacer click en un enlace.

*Credits: Jerome Bruandet

CVSS Scores

NISTv3.1 4.3

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track

Exploitation

None

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2021-06-08 CVE Published
2023-07-11 CVE Reserved
2024-09-11 CVE Updated
2024-09-11 First Exploit
2024-11-21 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-352: Cross-Site Request Forgery (CSRF)

CAPEC

References (9)

URL	Tag	Source
https://blog.nintechnet.com/25-wordpress-plugins-vulnerable-to-csrf-attacks	Not Applicable
https://blog.nintechnet.com/more-wordpress-plugins-and-themes-vulnerable-to-csrf-attacks	Not Applicable
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-1	Not Applicable
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-3	Not Applicable
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-4	Not Applicable
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-5	Not Applicable
https://www.wordfence.com/threat-intel/vulnerabilities/id/d21dc02f-789c-497e-9d01-02fa49bf9e30?source=cve	Third Party Advisory

URL	Date	SRC
https://blog.nintechnet.com/multiple-wordpress-plugins-fixed-csrf-vulnerabilities-part-2	2024-09-11

URL	Date	SRC
https://plugins.trac.wordpress.org/browser/custom-css-js-php/trunk/modules/code/model.code.php#L85	2023-11-07

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Wpfactory Search vendor "Wpfactory"		Custom Css\, Js \& Php Search vendor "Wpfactory" for product "Custom Css\, Js \& Php"				<= 2.0.7 Search vendor "Wpfactory" for product "Custom Css\, Js \& Php" and version " <= 2.0.7"		wordpress		Affected