Avada (Fusion) Builder <= 3.15.3 - Unauthenticated Arbitrary File Deletion via Form Entry Value
The Avada (Fusion) Builder plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the maybe_delete_files function in all versions up to, and including, 3.15.3. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). The attack requires a published Avada form configured to save entries to the database; an unauthenticated attacker submits a path-traversal payload via the wp_ajax_nopriv_fusion_form_submit_ajax handler while also controlling the fusion_privacy_expiration_interval and privacy_expiration_action fields to force an immediate 'delete' cleanup, causing the planted entry to be automatically processed by the Fusion_Form_DB_Privacy shutdown-hook routine without any administrator interaction.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| WordPress plugin | Avada (Fusion) Builder | <= 3.15.3 | 3.15.4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H- Weakness (CWE)
CWE-22- Platform
- WordPress
- Package
Avada (Fusion) Builder- Disclosed
- 18.06.2026
- Updated
- 11.10.2026 10:23
Sources and licenses
Wordfence Intelligence - e4bfb72e-023b-4bfd-b125-91f6ac2f200f - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Vulnerability history: Avada (Fusion) Builder
All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 30
- First → latest
- 04.2022 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 4
- High 7
- Medium 19
Disclosures per year
- 2022: 1
- 2023: 4
- 2024: 2
- 2025: 5
- 2026: 18
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