Nexter Blocks <= 4.5.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2025-8567
CVSS 6.4 (Medium)
Publicly Published August 18, 2025
Last Updated August 19, 2025
Researcher zer0gh0st

Description

The Nexter Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 4.5.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

References

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Vulnerability Details for Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder

Software Type Plugin
Software Slug the-plus-addons-for-block-editor (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.5.5, or a newer patched version
Affected Version
  • <= 4.5.4
Patched Version
  • 4.5.5

Recent vulnerabilities in Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder

# Title CVE ID CVSS Researchers Date
1 Nexter Blocks <= 5.0.1 - Authenticated (Author+) Stored Cross-Site Scripting CVE-2025-15678 6.4 Bob Matyas August 3, 2026
2 Nexter Blocks <= 5.0.1 - Payment Bypass to Authenticated (Contributor+) Stored CSS Injection CVE-2026-17011 4.3 Vaibhav Narkhede August 3, 2026
3 Nexter Blocks <= 5.0.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary CSS/JS File Deletion via 'plus_name' Parameter CVE-2026-15420 4.3 Wordfence PRISM July 23, 2026
4 Nexter Blocks <= 4.7.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'commentIcon' Block Attribute CVE-2026-6740 6.4 Muhammad Yudha - DJ July 7, 2026
5 Nexter Blocks <= 4.7.0 - Unauthenticated Information Exposure CVE-2026-39516 5.3 Bao - BlueRock March 26, 2026
6 Nexter Blocks <= 4.6.3 - Authenticated (Subscriber+) Information Exposure CVE-2026-24377 4.3 Nabil Irawan January 26, 2026
7 Nexter Blocks <= 4.5.4 - Missing Authorization CVE-2025-54739 5.3 MD ISMAIL August 14, 2025
8 Nexter Blocks <= 4.0.7 - Missing Authorization CVE-2024-56294 4.3 Khalid Yusuf January 3, 2025
9 Nexter Blocks <= 4.0.4 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-56246 6.4 João Pedro Soares de Alcântara December 30, 2024
10 Multiple Plugins <= (Various Versions) - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via FancyBox JavaScript Library CVE-2024-5020 6.4 Webbernaut December 3, 2024

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