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CVE-2024-13803

MEDIUM 5.4 CVSS 3.1
Published
February 26, 2025
Last modified
June 17, 2026
NVD status
Analyzed
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

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.

Affected WordPress components

  • Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns Plugin · essential-blocks
    Confirmed match Active
    Up to and including 5.2.3
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns — Up to and including 5.2.3
  • wpdeveloper essential_blocks — Up to and including 5.2.3

References

  • localhost http://localhost:1337/wp-content/plugins/essential-blocks/assets/admin/editor/editor.js Broken Link
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3242493/ Product
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/efdeca40-e021-478f-af75-c5566ae70735?source=cve Third Party Advisory
  • nvd.nist.gov Official NVD record