CVE-2026-104729 The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tab_index, empty_notice' parameter in
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-104729?
CVE-2026-104729 is a medium-severity vulnerability in themefusion Avada (Fusion) Builder, published on 28 Oct 2026.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-104729?
How do I fix CVE-2026-104729?
No fix has been published for CVE-2026-104729 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-104729 being exploited?
There is no known exploitation of CVE-2026-104729 in the wild and no public exploit code.
Sources
Also known as GHSA-w8x6-5chw-44wx.