CVE-2026-34889 PUBLISHED

WordPress Ultimate Addons for WPBakery Page Builder plugin < 3.21.4 - Cross Site Scripting (XSS) vulnerability

Assigner: Patchstack
Reserved: 31.03.2026 Published: 01.04.2026 Updated: 01.04.2026

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Brainstorm Force Ultimate Addons for WPBakery Page Builder allows DOM-Based XSS.This issue affects Ultimate Addons for WPBakery Page Builder: from n/a before 3.21.4.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
CVSS Score: 6.5

Attack Vector	Network	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	Low
User Interaction	Required	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Brainstorm Force
Product	Ultimate Addons for WPBakery Page Builder
Versions	Default: unaffected affected from n/a to 3.21.4 (excl.)

Solutions

Update the WordPress Ultimate Addons for WPBakery Page Builder Plugin to the latest available version (at least 3.21.4).

Credits

Bonds | Patchstack Bug Bounty Program finder

References

https://patchstack.com/database/wordpress/plugin/ultimate_vc_addons/vulnerability/wordpress-ultimate-addons-for-wpbakery-page-builder-plugin-3-21-4-cross-site-scripting-xss-vulnerability?_s_id=cve

Problem Types

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

Impacts

CAPEC-588 DOM-Based XSS