CVE-2026-12256

WordPress Fusion Builder plugin <= 3.15.3 - PHP Object Injection vulnerability

State: Published
Severity: 8.8 High
Published: Jun 16, 2026
Updated: Oct 1, 2026
Reserved: Jun 15, 2026

Description

Deserialization of Untrusted Data vulnerability in ThemeFusion Fusion Builder fusion-builder allows Object Injection.This issue affects Fusion Builder: from n/a through 3.15.3.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Patchstack

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
Fusion BuilderThemeFusion	3.15.3 and earlierAffectedfrom 3.15.4Not affected

References

https://patchstack.com/database/wordpress/plugin/fusion-builder/vulnerability/wordpress-avada-theme-3-15-3-php-object-injection-vulnerability?_s_id=cvevdb-entry

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