CVE-2026-6740 | The Nexter Blocks – Gutenberg Blocks, Page Builder & AI Webs… | CVSS 6.4 MEDIUM

Description

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.

Metadata

CVE ID: CVE-2026-6740
State: PUBLISHED
Assigner: Wordfence
Reserved: 2026-04-21 10:38 UTC
Published: 2026-07-08 12:33 UTC
Last updated: 2026-07-08 12:33 UTC
Primary CWE: CWE-79
CWE-79 Improper Neutralization of Input During Web Page Gene…
Vendor / Product: posimyththemes / Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder
Sources: cve.org · NVD

Severity & Metrics

6.4 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Affected products (1)

Vendor	Product	Platform	Versions
posimyththemes	Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder	—	0 ≤ 4.7.4

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.4	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References (2)