CVE-2026-3427
MEDIUM
6,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: changed
Confidentiality: low
Integrity: low
Availability: none
Description
AI Translation Available
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 `jsonText` block attribute in all versions up to, and including, 27.1.1 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 an injected page.
79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
StableCommon Consequences
Security Scopes Affected:
Access Control
Confidentiality
Integrity
Availability
Potential Impacts:
Bypass Protection Mechanism
Read Application Data
Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies:
AI/ML, Web Based, Web Server
https://github.com/Yoast/wordpress-seo/pull/23035
https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/27.0/inc/class-wp…
https://plugins.trac.wordpress.org/browser/wordpress-seo/tags/27.0/src/generato…
https://plugins.trac.wordpress.org/changeset/3475308/wordpress-seo
https://www.wordfence.com/threat-intel/vulnerabilities/id/fee1fef5-5716-49e0-a0…