CVE-2019-20042

WordPress Core < 5.3.1 - Authenticated Stored Cross-Site Scripting

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In wp-includes/formatting.php in WordPress 3.7 to 5.3.0, the function wp_targeted_link_rel() can be used in a particular way to result in a stored cross-site scripting (XSS) vulnerability. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release.

En wp-includes / formatting.php en WordPress 3.7 a 5.3.0, la función wp_targeted_link_rel () se puede usar de una manera particular para generar una vulnerabilidad de scripting entre sitios (XSS) almacenada. Esto se ha solucionado en WordPress 5.3.1, junto con todas las versiones anteriores de WordPress desde 3.7 a 5.3 a través de una versión menor.

Several vulnerabilities were discovered in Wordpress, a web blogging tool. They allowed remote attackers to perform various Cross-Side Scripting (XSS) and Cross-Site Request Forgery (CSRF) attacks, create files on the server, disclose private information, create open redirects, poison cache, and bypass authorization access and input sanitation.

*Credits: Simon Scannell

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

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

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-12-13 CVE Published
2019-12-27 CVE Reserved
2024-08-05 CVE Updated
2025-03-30 EPSS 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 (10)

URL	Tag	Source
https://blog.ripstech.com/filter/vulnerabilities	Not Applicable
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-xvg2-m2f4-83m7	Third Party Advisory
https://hackerone.com/reports/509930	Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/8	Mailing List
https://wpvulndb.com/vulnerabilities/9975	Release Notes

URL	Date	SRC

URL	Date	SRC
https://core.trac.wordpress.org/changeset/46894/trunk	2023-01-19
https://github.com/WordPress/wordpress-develop/commit/1f7f3f1f59567e2504f0fbebd51ccf004b3ccb1d	2023-01-19

URL	Date	SRC
https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release	2023-01-19
https://www.debian.org/security/2020/dsa-4599	2023-01-19
https://www.debian.org/security/2020/dsa-4677	2023-01-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Wordpress Search vendor "Wordpress"		Wordpress Search vendor "Wordpress" for product "Wordpress"				>= 3.7 < 5.3.1 Search vendor "Wordpress" for product "Wordpress" and version " >= 3.7 < 5.3.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected