Stored Cross-Site Scripting Vulnerability in Avada Builder by ThemeFusion
CVE-2026-104729

6.4MEDIUM

Key Information:

Vendor

WordPress
Status
Avada (fusion) Builder
Vendor
CVE Published:
28 October 2026

What is CVE-2026-104729?

The Avada Builder plugin for WordPress is susceptible to Stored Cross-Site Scripting due to inadequate input sanitization associated with the 'tab_index' and 'empty_notice' parameters. This vulnerability impacts all versions up to 3.16.2, allowing authenticated attackers with contributor-level access to inject malicious scripts into pages. The exploitation occurs because existing measures, like wp_kses_post, fail to adequately strip harmful elements given that they reside within shortcode attribute text, which is treated as plain text rather than HTML. This could lead to unauthorized script execution when a page is accessed by users.

Affected Version(s)

Avada (Fusion) Builder 0 <= 3.16.2

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://avada.com/blog/version-7-16-3-security-update/

CVSS V3.1

Score:
6.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Wordfence PRISM
.