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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.

PUBLISHED Reserved 2026-06-16 | Published 2026-06-27 | Updated 2026-06-27 | Assigner Wordfence




MEDIUM: 4.4CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Problem types

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

Product status

Default status
unaffected

Any version
affected

Timeline

2026-06-16:Vendor Notified
2026-06-26:Disclosed

Credits

R4mbb finder

R4m bb finder

References

www.wordfence.com/...-43e0-4e3a-ae2d-f6ff8a657512?source=cve

plugins.trac.wordpress.org/...3.8.0/lib/framework/helper.php

plugins.trac.wordpress.org/...amework/includes/class-api.php

plugins.trac.wordpress.org/...udes/class-global-variable.php

plugins.trac.wordpress.org/...s/class-frontend-generator.php

plugins.trac.wordpress.org/...3.8.0/lib/framework/helper.php

plugins.trac.wordpress.org/...3.6.3/lib/framework/helper.php

plugins.trac.wordpress.org/...amework/includes/class-api.php

plugins.trac.wordpress.org/...udes/class-global-variable.php

plugins.trac.wordpress.org/...s/class-frontend-generator.php

plugins.trac.wordpress.org/...3.6.3/lib/framework/helper.php

plugins.trac.wordpress.org/...tenverse&sfp_email=&sfph_mail=

cve.org (CVE-2026-12399)

nvd.nist.gov (CVE-2026-12399)

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