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CVE-2026-12399

MEDIUM
4.4
CVSS 3.1
Description
The Gutenverse – WordPress Blocks, Page Builder & Site Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 3.8.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Metadata

CVE ID
CVE-2026-12399
State
PUBLISHED
Assigner
Wordfence
Reserved
2026-06-16 13:23 UTC
Published
2026-06-27 06:50 UTC
Last updated
2026-06-27 06:50 UTC
Primary CWE
CWE-79
CWE-79 Improper Neutralization of Input During Web Page Gene…
Vendor / Product
jegstudio / Gutenverse – WordPress Blocks, Page Builder & Site Editor
Sources
cve.org  ·  NVD

Severity & Metrics

4.4 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Affected products (1)
VendorProductPlatformVersions
jegstudio Gutenverse – WordPress Blocks, Page Builder & Site Editor — 0 ≤ 3.8.0
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
4.4 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
References (12)
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