9.8
Critical
CVE-2026-18431 The Avada theme for WordPress is vulnerable to Arbitrary File Write in all versions up to, and including, 7.16 when…
Description
The Avada theme for WordPress is vulnerable to Arbitrary File Write in all versions up to, and including, 7.16 when the Fusion Builder plugin is installed and active in versions up to, and including, 3.16. This is due to a chain of authorization and input validation weaknesses across the two components that makes it possible for unauthenticated attackers to write attacker-controlled files to the server. This can be used to create and execute arbitrary PHP files, resulting in remote code execution and complete site compromise. Successful exploitation requires both Avada and Fusion Builder to be installed and active, as well as certain administrator-authored content to be present.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Avada (Fusion) Builder 3.16 | earliest → 3.16 | No fix stated |
| Avada | Website Builder For WordPress & WooCommerce 7.16 | earliest → 7.16 | No fix stated |
Other CVEs of Avada (Fusion) Builder
The 20 CVEs of Avada (Fusion) Builder →
CVE-2026-84938
Avada (Fusion) Builder <= 3.16.1 - Unauthenticated Stored Cross-Site Scripting via Form Notification Dynamic-Data action_hook
7.2
High
CVE-2026-104729
The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tab_index,…
6.4
Medium
CVE-2026-97471
The Avada (Fusion) Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to,…
5.3
Medium
CVE-2026-97670
The Avada (Fusion) Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and…
9.1
Critical