The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 2.8.1 due t…

Code

The project this record applies to. Exploit listings stay in References.

• Plugin source · wordpress.org

Timeline

Detection, updates, and resolution for this record.

1. May 12, 2026 · NIST NVD

   Detected

   The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 2.8.1 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 a

2. Jun 17, 2026 · NIST NVD

   Updated

   The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 2.8.1 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 a

Sources

• CVE.orgVulnerability recordCVE-2026-3604

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-3604

  The WP SEO Structured Data Schema plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the parameter in all versions up to, and including, 2.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticate

  nvd.nist.gov

References

• Reference · plugins.trac.wordpress.org
• Reference · plugins.trac.wordpress.org
• Reference · plugins.trac.wordpress.org
• Reference · plugins.trac.wordpress.org
• Reference · wordfence.com