Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)
CVE-2021-24153

5.4MEDIUM

Key Information:

Vendor

Wordpress
Status
Yoast Seo
Vendor
CVE Published:
5 April 2021

What is CVE-2021-24153?

A Stored Cross-Site Scripting vulnerability was discovered in the Yoast SEO WordPress plugin before 3.4.1, which had built-in blacklist filters which were blacklisting Parenthesis as well as several functions such as alert but bypasses were found.

Affected Version(s)

Yoast SEO 3.4.1

References

https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-...
x_refsource_CONFIRM
https://plugins.trac.wordpress.org/changeset/1466243/word...
x_refsource_MISC
https://packetstormsecurity.com/files/138192/
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Hammad Shamsi
.
CVE-2021-24153 : Yoast SEO < 3.4.1 - Authenticated Stored Cross-Site Scripting (XSS)