Yoast SEO <= 26.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'yoast-schema' Block Attribute
| CVE | CVE-2026-1293 |
|---|---|
| CVSS | 6.4 (Medium) |
| Publicly Published | February 5, 2026 |
| Last Updated | February 6, 2026 |
| Researcher |
suyoung kim(AhnLab)
- AhnLab
|
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.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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Vulnerability Details for Yoast SEO – Advanced SEO with real-time guidance and built-in AI
| Software Type | Plugin |
|---|---|
| Software Slug | wordpress-seo (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 26.9, or a newer patched version |
| Affected Version |
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| Patched Version |
|
Recent vulnerabilities in Yoast SEO – Advanced SEO with real-time guidance and built-in AI
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