CVE-2024-13803
Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates <= 5.2.3 - Authenticated (Contributor+) Stored Cross-Site Scripting
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Essential Blocks – Page Builder Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-marker’ parameter in all versions up to, and including, 5.2.3 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.
| CWE | CWE-79 |
| Vendor | wpdevteam |
| Product | gutenberg essential blocks – page builder for gutenberg blocks & patterns |
| Published | Feb 26, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
wpdevteam / Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns
0 ≤ 5.2.3
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/efdeca40-e021-478f-af75-c5566ae70735?source=cve localhost: http://localhost:1337/wp-content/plugins/essential-blocks/assets/admin/editor/editor.js plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3242493/
Credits
D.Sim