PT-2021-15698 · Yoast · Yoast Seo

Hammad Shamsi · Published 2021-04-05 · Updated 2021-04-09 · CVE-2021-24153

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions: Yoast SEO WordPress plugin versions prior to 3.4.1

Description: A Stored Cross-Site Scripting issue was found in the plugin, which had built-in blacklist filters. These filters were blacklisting certain characters and functions, such as alert, but bypasses were discovered.

Recommendations: For versions prior to 3.4.1, update to version 3.4.1 or later to resolve the issue.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-24153

Affected Products

Yoast Seo

References · 5

• 🔥 https://packetstormsecurity.com/files/138192 · Exploit
• https://osv.dev/vulnerability/CVE-2021-24153 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24153 · Security Note
• https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo · Note
• https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc · Note