CVE-2021-24153

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

EPSS 1.1%CWE-79

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

05 Apr 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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 products

Unknown · Yoast SEO

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References

https://packetstormsecurity.com/files/138192/https://plugins.trac.wordpress.org/changeset/1466243/wordpress-seo https://wpscan.com/vulnerability/77810044-394d-4314-b9a1-20c7dca726dc