PT-2026-34628 · WordPress · Gutentor

Published 2026-04-23 · Updated 2026-04-23 · CVE-2026-2951

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Gutentor – Gutenberg Blocks – Page Builder for Gutenberg Editor versions prior to 3.5.6

Description The plugin is subject to Stored Cross-Site Scripting, a flaw where malicious scripts are permanently stored on the target server. This occurs due to insufficient input sanitization and output escaping, allowing authenticated attackers with contributor-level access and above to inject arbitrary web scripts into pages. These scripts execute whenever a user visits the affected page.

Recommendations Update to a version newer than 3.5.5.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-2951

Affected Products

Gutentor

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-2951 · Security Note
• https://twitter.com/CVEnew/status/2047359893754056809 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/d7c639b8-35f5-4eaf-a663-1adab3ba2a16?source=cve · Note
• https://plugins.trac.wordpress.org/changeset/3495930/gutentor · Note