CVE-2024-4439

WordPress Core < 6.5.2 - Unauthenticated & Authenticated (Contributor+) Stored Cross-Site Scripting via Avatar Block

Severity Score

7.2

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

WordPress Core is vulnerable to Stored Cross-Site Scripting via user display names in the Avatar block in various versions up to 6.5.2 due to insufficient output escaping on the display name. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. In addition, it also makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that have the comment block present and display the comment author's avatar.

WordPress Core es vulnerable a Cross-Site Scripting Almacenado a través de nombres para mostrar de usuario en el bloque Avatar en varias versiones hasta 6.5.2 debido a una salida insuficiente que se escapa en el nombre para mostrar. Esto hace posible que atacantes autenticados, con acceso de nivel de colaborador y superior, inyecten scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada. Además, también hace posible que atacantes no autenticados inyecten scripts web arbitrarios en páginas que tienen el bloque de comentarios presente y muestran el avatar del autor del comentario.

*Credits: John Blackbourn, Matthew Rollings

CVSS Scores

Wordfencev3.1 7.2

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-04-09 CVE Published
2024-05-02 CVE Reserved
2024-05-06 First Exploit
2024-07-04 EPSS Updated
2024-08-01 CVE Updated
---------- 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 (8)

URL	Tag	Source
https://core.trac.wordpress.org/changeset/57951/branches/6.4/src/wp-includes/blocks/avatar.php
https://core.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=57950%40%2F&new=57950%40%2F&sfp_email=&sfph_mail=#file3
https://wordpress.org/news/2024/04/wordpress-6-5-2-maintenance-and-security-release
https://www.wordfence.com/blog/2024/04/unauthenticated-stored-cross-site-scripting-vulnerability-patched-in-wordpress-core
https://www.wordfence.com/threat-intel/vulnerabilities/id/e363c09a-4381-4b3a-951c-9a0ff5669016?source=cve

URL	Date	SRC
https://github.com/d0rb/CVE-2024-4439	2024-05-06
https://github.com/MielPopsssssss/CVE-2024-4439	2024-05-06
https://github.com/xssor-dz/-CVE-2024-4439	2024-05-20

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
WordPress Foundation Search vendor "WordPress Foundation"		WordPress Search vendor "WordPress Foundation" for product "WordPress"				>= 6.0.0 <= 6.0.7 Search vendor "WordPress Foundation" for product "WordPress" and version " >= 6.0.0 <= 6.0.7"		en		Affected
WordPress Foundation Search vendor "WordPress Foundation"		WordPress Search vendor "WordPress Foundation" for product "WordPress"				>= 6.1.0 <= 6.1.5 Search vendor "WordPress Foundation" for product "WordPress" and version " >= 6.1.0 <= 6.1.5"		en		Affected
WordPress Foundation Search vendor "WordPress Foundation"		WordPress Search vendor "WordPress Foundation" for product "WordPress"				>= 6.2.0 <= 6.2.4 Search vendor "WordPress Foundation" for product "WordPress" and version " >= 6.2.0 <= 6.2.4"		en		Affected
WordPress Foundation Search vendor "WordPress Foundation"		WordPress Search vendor "WordPress Foundation" for product "WordPress"				>= 6.3.0 <= 6.3.3 Search vendor "WordPress Foundation" for product "WordPress" and version " >= 6.3.0 <= 6.3.3"		en		Affected
WordPress Foundation Search vendor "WordPress Foundation"		WordPress Search vendor "WordPress Foundation" for product "WordPress"				>= 6.4.0 <= 6.4.3 Search vendor "WordPress Foundation" for product "WordPress" and version " >= 6.4.0 <= 6.4.3"		en		Affected
WordPress Foundation Search vendor "WordPress Foundation"		WordPress Search vendor "WordPress Foundation" for product "WordPress"				>= 6.5.0 <= 6.5.1 Search vendor "WordPress Foundation" for product "WordPress" and version " >= 6.5.0 <= 6.5.1"		en		Affected