Description
The Yoast SEO – Advanced SEO with real-time guidance and built-in AI plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the `yoast-schema` block attribute in all versions up to, and including, 26.8 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
yoast Yoast SEO – Advanced SEO with real-time guidance and built-in AI
Default version status: unaffected
0 to ≤ 26.8affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8b2e7c2d-ed2f-439b-9cee-f2e5d46121b6?source=cve ↗
- https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/26.8/src/presenters/schema-presenter.php#L49 ↗
- https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/26.8/inc/class-wpseo-utils.php#L915 ↗
- https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/26.8/src/generators/schema-generator.php#L188 ↗