CVE-2026-96256Medium· 6.4▾ Sunlit

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…

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score35/ 100 · Low

impact 35.2 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Oct 1, 2026

Updated

Oct 3, 2026

CVSS

6.4

Vendor

wpdevteam

Product

Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns

CWE

CWE-79

Depth score

35 · Low

EPSS

0.28% · p21

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

decided 2026-10-03

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 2.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 2 days

Oct 1, 2026Published
Disclosed via NVD
Oct 2, 2026EPSS first tracked
0.3%
Oct 3, 2026Record revised
Last analysed / modified upstream

wpdevteam CWE-79 #nvd #cve.org

Affected

gutenberg_essential_blocks_page_builder_for_gutenberg_blocks_patterns <= 6.4.5

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org