The Maxi Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `/wp-json/maxi-blocks/v1.0/style-card` REST API endpoint in all versions up to, and including, 2.1.9 due to insufficient input sanitization and output escaping of the `sc_styles` parameter. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts that execute on every page where the plugin's style card styles are loaded, including across the entire WordPress admin panel.

Project Subscriptions

Vendors Products
Maxiblocks Builder | 17,000+ Design Assets, Patterns, Icons & Starter Sites Subscribe
Wordpress Subscribe
Wordpress Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Mon, 04 May 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 04 May 2026 16:15:00 +0000

Type Values Removed Values Added
First Time appeared Ckp267
Ckp267 maxiblocks Builder | 17,000+ Design Assets, Patterns, Icons & Starter Sites
Wordpress
Wordpress wordpress
Vendors & Products Ckp267
Ckp267 maxiblocks Builder | 17,000+ Design Assets, Patterns, Icons & Starter Sites
Wordpress
Wordpress wordpress

Sat, 02 May 2026 04:15:00 +0000

Type Values Removed Values Added
Description The Maxi Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `/wp-json/maxi-blocks/v1.0/style-card` REST API endpoint in all versions up to, and including, 2.1.9 due to insufficient input sanitization and output escaping of the `sc_styles` parameter. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts that execute on every page where the plugin's style card styles are loaded, including across the entire WordPress admin panel.
Title Maxi Blocks <= 2.1.9 - Authenticated (Author+) Stored Cross-Site Scripting via Style Card REST API
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

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-05-04T17:10:49.270Z

Reserved: 2026-04-15T17:07:54.863Z

Link: CVE-2026-6378

cve-icon Vulnrichment

Updated: 2026-05-04T17:10:45.606Z

cve-icon NVD

Status : Received

Published: 2026-05-02T04:16:11.990

Modified: 2026-05-02T04:16:11.990

Link: CVE-2026-6378

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-04T16:07:11Z

Weaknesses