The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Google Map block's 'marker' attribute in versions up to, and including, 6.4.5 This is due to insufficient input sanitization and output escaping on marker title/content values, which are stored as JSON and then decoded and concatenated directly into raw HTML by the frontend script's InfoWindow content builder. 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.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.3.0/assets/blocks/google-map/frontend.js#L1 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.3.0/includes/Blocks/GoogleMap.php#L82 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.3.0/src/blocks/google-map/src/save.js#L35 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.4.5/assets/blocks/google-map/frontend.js#L1 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.4.5/includes/Blocks/GoogleMap.php#L82 cve-icon cve-icon
https://plugins.trac.wordpress.org/browser/essential-blocks/tags/6.4.5/src/blocks/google-map/src/save.js#L35 cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset/3715353/essential-blocks/trunk/assets/blocks/google-map/frontend.js cve-icon cve-icon
https://plugins.trac.wordpress.org/changeset?reponame=&new=3715353%40essential-blocks%2Ftags%2F6.4.6&old=3706819%40essential-blocks%2Ftags%2F6.4.5 cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/606f25d9-f8c7-416a-8bb8-0cc57901ff5a?source=cve cve-icon cve-icon
History

Thu, 01 Oct 2026 09:45:00 +0000

Type Values Removed Values Added
Description The Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Google Map block's 'marker' attribute in versions up to, and including, 6.4.5 This is due to insufficient input sanitization and output escaping on marker title/content values, which are stored as JSON and then decoded and concatenated directly into raw HTML by the frontend script's InfoWindow content builder. 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.
Title Gutenberg Essential Blocks <= 6.4.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'marker' Attribute
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-10-01T09:26:57.815Z

Reserved: 2026-09-22T19:20:02.066Z

Link: CVE-2026-96256

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-01T10:17:17.613

Modified: 2026-10-01T10:17:17.613

Link: CVE-2026-96256

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T10:45:07Z

Weaknesses