CVE-2026-8713

CRITICAL EXPLOITED NUCLEI

Avada (Fusion) Builder <= 3.15.3 - Unauthenticated Arbitrary File Deletion via Form Entry Value

Title source: cna
STIX 2.1

Exploitation Summary

CVE-2026-8713 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including shinthink. A Nuclei detection template is also available.

AI-analyzed exploit summary This exploit leverages a path traversal vulnerability in Avada (Fusion) Builder WordPress plugin (≤ 3.15.3) to delete arbitrary files via unauthenticated AJAX form submission. Deleting wp-config.php forces WordPress into reinstall mode, enabling attacker-controlled database connection and RCE.

Description

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.

Exploits (1)

github WORKING POC
by shinthink · pythondos
https://github.com/shinthink/CVE-2026-8713

This exploit leverages a path traversal vulnerability in Avada (Fusion) Builder WordPress plugin (≤ 3.15.3) to delete arbitrary files via unauthenticated AJAX form submission. Deleting wp-config.php forces WordPress into reinstall mode, enabling attacker-controlled database connection and RCE.

Classification
Working Poc 98%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: Avada (Fusion) Builder WordPress plugin ≤ 3.15.3
No auth needed
Prerequisites: Avada Builder plugin installed and active (≤ 3.15.3) · Published Avada form accessible via AJAX · Target server allows file deletion (no strict filesystem permissions)
mistral-large-3 · analyzed Jul 06, 2026 Full analysis →

Nuclei Templates (1)

Avada (Fusion) Builder <= 3.15.3 - Unauthenticated Arbitrary File Deletion
CRITICALVERIFIEDby rool-machine
Shodan: http.component:"WordPress" http.component:"Avada"
FOFA: body="fusion-builder" && body="WordPress"

Scores

CVSS v3 9.1
EPSS 0.0267
EPSS Percentile 84.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

VulnCheck KEV 2026-06-18
CWE
CWE-22
Status published
Products (1)
themefusion/Avada (Fusion) Builder < 3.15.3
Published Jun 19, 2026
Tracked Since Jun 19, 2026