PT-2026-56405 · Posimyththemes · Nexa Blocks – Gutenberg Blocks

Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-6740

Mitre

CVSS v3.1

6.4

Medium

Base vector

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

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-6740

Affected Products

Nexa Blocks – Gutenberg Blocks

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-6740 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/f5184598-b0bd-4026-971c-da36d79497df?source=cve · Note
• https://plugins.trac.wordpress.org/changeset/3512686/the-plus-addons-for-block-editor/trunk/classes/blocks/tp-post-meta/index.php · Note