CVE-2026-10833mediumCWE-79

CVE-2026-10833: medium-severity vulnerability in wpdevteam Gutenberg Essential Blocks – Page…

Gutenberg Essential Blocks - Page Builder for Gutenberg Blocks & Patterns <= 6.1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'configurablePrefix' Block Attribute

Published

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.4epss 0.3%
exploitation probability
0.3%top 76% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Affected products
wpdevteam · Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
Related CVEs — wpdevteam Gutenberg Essential Blocks – Page…

In the same product, most dangerous first.

CVE-2023-4402HIGHEssential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via productsEPSS 1.5%CVE-2023-4386HIGHEssential Blocks <= 4.2.0 - Unauthenticated PHP Object Injection via queriesEPSS 0.9%CVE-2023-2085MEDIUMEssential Blocks <= 4.0.6 - Missing Authorization via templatesEPSS 0.6%CVE-2023-2086MEDIUMEssential Blocks <= 4.0.6 - Missing Authorization via template_countEPSS 0.6%CVE-2023-2083MEDIUMEssential Blocks <= 4.0.6 - Missing Authorization via saveEPSS 0.6%CVE-2024-2255MEDIUMEssential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site ScriptingEPSS 0.6%
References
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.1.4/includes/Blocks/TableOfContents.php#L245https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.1.4/includes/Blocks/TableOfContents.php#L425https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.1.4/src/blocks/table-of-contents/src/frontend.js#L448https://www.wordfence.com/threat-intel/vulnerabilities/id/0efe8bbd-c1c9-48ed-adab-34c0ac3da8bf?source=cve