Threat intelligence

Avada <= 7.16 and Fusion Builder <= 3.16 - Unauthenticated Remote Code Execution via Arbitrary File Write

CVE-2026-18431 · fusion-builder

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Fusion Builder at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Avada <= 7.16 and Fusion Builder <= 3.16 - Unauthenticated Remote Code Execution via Arbitrary File Write
Affected software: fusion-builder(Plugin)
Affected versions: ≤ 3.16
Authentication: Unauthenticated
Vulnerability type: Remote code execution
CVE: CVE-2026-18431
Published: 25 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run arbitrary code on the server if exploited.
Source: Data imported from Wordfence Intelligence (advisory 5bef5bd3-8ec9-4a5b-bcdd-98952c7ef390). Methodology and redistribution notes

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