CVE-2026-10833
MediumCVSS 6.4Exploitation Probability (EPSS)
Low risk9th percentile — higher than 9% of all known CVEs
Summary
The Gutenberg Essential Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via the 'configurablePrefix' Block Attribute. This issue affects all versions up to and including 6.1.4 due to insufficient input sanitization and output escaping.
Risk Assessment
Authenticated attackers with Contributor-level access and above can inject arbitrary web scripts that will execute whenever a user accesses the injected page. This could lead to data theft or account takeover.
Recommendation
It is recommended to update the plugin to the latest version to mitigate this vulnerability. Additionally, conducting a security audit of the application is advisable to minimize the risk of similar attacks in the future.
Original NVD description (English source)
The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'configurablePrefix' Block Attribute in all versions up to, and including, 6.1.4 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.