CVE-2019-17673

WordPress Core < 5.2.4 - Cache Poisoning

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

WordPress before 5.2.4 is vulnerable to poisoning of the cache of JSON GET requests because certain requests lack a Vary: Origin header.

WordPress versiones anteriores a 5.2.4, es vulnerable al envenenamiento de la memoria caché de peticiones JSON GET porque ciertas peticiones carecen de un encabezado Vary: Origin.

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: David Newman

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-10-14 CVE Published
2019-10-17 CVE Reserved
2024-08-05 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CAPEC

References (8)

URL	Tag	Source
https://blog.wpscan.org/wordpress/security/release/2019/10/15/wordpress-524-security-release-breakdown.html	Third Party Advisory
https://seclists.org/bugtraq/2020/Jan/8	Mailing List
https://wpvulndb.com/vulnerabilities/9911	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://core.trac.wordpress.org/changeset/46478	2022-03-31
https://github.com/WordPress/WordPress/commit/b224c251adfa16a5f84074a3c0886270c9df38de	2022-03-31

URL	Date	SRC
https://wordpress.org/news/2019/10/wordpress-5-2-4-security-release	2022-03-31
https://www.debian.org/security/2020/dsa-4599	2022-03-31
https://www.debian.org/security/2020/dsa-4677	2022-03-31

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"				< 5.2.4 Search vendor "Wordpress" for product "Wordpress" and version " < 5.2.4"		-		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