Stored Cross-Site Scripting Vulnerability in Nexter Blocks WordPress Plugin
CVE-2026-6740

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website Builder
Vendor
CVE Published:
8 July 2026

What is CVE-2026-6740?

The Nexter Blocks plugin for WordPress is susceptible to stored cross-site scripting (XSS) attacks due to inadequate sanitization of the 'commentIcon' parameter. This vulnerability allows authenticated attackers with contributor-level access or higher to inject malicious scripts into web pages. When users access these compromised pages, the injected scripts execute, posing a risk to both user data and the overall integrity of the site.

Affected Version(s)

Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder 0 <= 4.7.4

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3512686/the-...

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Muhammad Yudha - DJ
.