Nexter Blocks <= 4.7.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'commentIcon' Block Attribute

2026-07-07 23:56

Muhammad Yudha - DJ

Strategic Overview

Status

Patched in 4.7.5

Affected PluginNexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder

Affected Version<= 4.7.4

CVSS6.4Medium

CVECVE-2026-6740

View all Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder vulnerabilities

Vulnerability Overview

The Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'commentIcon' parameter in all versions up to, and including, 4.7.4 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.

Technical Analysis

REMEDIATION: Update to version 4.7.5, or a newer patched version --- IDENTIFIER: CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

External References

https://www.cve.org/CVERecord?id=CVE-2026-6740 https://www.wordfence.com/threat-intel/vulnerabilities/id/f5184598-b0bd-4026-971c-da36d79497df