meFusion Avada Builder Plugin up to 3.16.2 on WordPress Shortcode Attribute tab_index/empty_notice cross site scripting

Summaryinfo

A vulnerability was found in meFusion Avada Builder Plugin up to 3.16.2. It has been declared as problematic. Impacted is an unknown function of the component Shortcode Attribute Handler. Executing a manipulation of the argument tab_index/empty_notice can lead to cross site scripting. This vulnerability is tracked as CVE-2026-104729. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in meFusion Avada Builder Plugin up to 3.16.2. This vulnerability affects some unknown processing of the component Shortcode Attribute Handler. The manipulation of the argument tab_index/empty_notice with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes:

The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tab_index, empty_notice' parameter in all versions up to, and including, 3.16.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. wp_kses_post does not strip the payload on save because the dangerous characters reside within shortcode attribute text between square brackets, which kses treats as plain text rather than HTML markup.

The advisory is available at wordfence.com. This vulnerability was named CVE-2026-104729 since 10/02/2026. The exploitation appears to be easy. The attack can be initiated remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• meFusion

Name

• Avada Builder Plugin

Version

• 3.16.0
• 3.16.1
• 3.16.2

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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