How severe is CVE-2026-6740?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website

CVE-2026-6740

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…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-6740?: CVE-2026-6740 is a medium-severity vulnerability in Posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-07-08.
How severe is CVE-2026-6740?: Medium severity. CVSS v3 base score is 6.4 out of 10.