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CVE-2026-1293— Yoast SEO <= 26.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'yoast-schema' Block Attribute

Quick assessment

Affected
yoast Yoast SEO – Advanced SEO with real-time guidance and built-in AI
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Yoast SEO 26.8及之前版本存在跨站脚本漏洞，该漏洞源于对yoast-schema块属性的输入清理和输出转义不足，可能导致经过身份验证的攻击者注入任意Web脚本。

CVSS 6.4 · Medium EPSS 0.19% · P9
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I. Basic Information for CVE-2026-1293

Vulnerability Information
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Vulnerability Title
Yoast SEO <= 26.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'yoast-schema' Block Attribute
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Yoast SEO 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Yoast SEO 26.8及之前版本存在跨站脚本漏洞，该漏洞源于对yoast-schema块属性的输入清理和输出转义不足，可能导致经过身份验证的攻击者注入任意Web脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
yoast Yoast SEO – Advanced SEO with real-time guidance and built-in AI * ~ 26.8 -

II. Public POCs for CVE-2026-1293

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III. Intelligence Information for CVE-2026-1293

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Patches & Fixes for CVE-2026-1293 (1)

IV. Related Vulnerabilities

Same product: Yoast SEO – Advanced SEO with real-time guidance and built-in AI
Same vendor: yoast
Same weakness: CWE-79

V. Comments for CVE-2026-1293

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