CVE-2026-2951

MEDIUM

Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor <= 3.5.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via Gutentor Block HTML

Title source: cna

Description

The Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.5.5 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.

References (2)

https://www.wordfence.com/threat-intel/vulnerabilities/id/d7c639b8-35f5-4eaf-a663-1adab3ba2a16?source=cve

https://plugins.trac.wordpress.org/changeset/3495930/gutentor

Scores

CVSS v3 5.4

EPSS 0.0001

EPSS Percentile 1.1%

Attack Vector NETWORK

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

Details

CWE

CWE-79

Status published

Products (1)

gutentor/Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor < 3.5.5

Published Apr 23, 2026

Tracked Since Apr 23, 2026