CVE-2026-34889 WordPress Ultimate Addons for WPBakery Page Builder plugin < 3.21.4 - Cross Site Scripting (XSS) vulnerability
An attacker can execute arbitrary scripts in the context of other users via DOM-based XSS in the Ultimate Addons for WPBakery Page Builder plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-34889?
CVE-2026-34889 is a medium-severity cross-site scripting vulnerability in Brainstorm Force Ultimate Addons for WPBakery Page Builder, published on 1 Apr 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-34889?
How do I fix CVE-2026-34889?
No fix has been published for CVE-2026-34889 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-34889 being exploited?
There is no known exploitation of CVE-2026-34889 in the wild and no public exploit code.
Sources
Also known as GHSA-8f2q-5jx5-qqfg.