CVE-2023-40680 - CVE House

Status published Medium CVE-2023-40680

WordPress Yoast SEO Plugin <= 21.0 is vulnerable to Cross Site Scripting (XSS)

5.9 CVSS

Vulnerability Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Team Yoast Yoast SEO allows Stored XSS.This issue affects Yoast SEO: from n/a through 21.0.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-40680

Check My Exposure

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Rafie Muhammad (Patchstack)

References

https://patchstack.com/database/vulnerability/wordpress-seo/wordpress-yoast-seo-plugin-21-0-cross-site-scripting-xss-vulnerability?_s_id=cve

More from Team Yoast

View All →

CVE-2024-33641

WordPress Custom field finder plugin <= 0.3 - PHP Object Injection vulnerability

Medium 5.4

Affected Vendor

Team Yoast

View all reports →

Affected Software

Yoast SEO

Vulnerable Versions:

Unknown

Timeline

Official Publish: November 30th, 2023

Last Modified: April 28th, 2026

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L

Weaknesses (CWE)

CWE-79

MITRE ATT&CK TTPs

T1189 Drive-by Compromise

Initial Access

T1059.007 JavaScript

Execution

T1539 Steal Web Session Cookie

Collection

T1213 Data from Information Repositories