Threat intelligence

Fluent Forms <= 6.2.11 - Unauthenticated Stored Cross-Site Scripting via Notification Smartcode Values

CVE-2026-18146 · fluentform

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

Vulnerability: Fluent Forms <= 6.2.11 - Unauthenticated Stored Cross-Site Scripting via Notification Smartcode Values
Affected software: fluentform(Plugin)
Affected versions: ≤ 6.2.11
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-18146
Published: 12 August 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 643f92e2-b14e-4056-97fc-1c631027c54f). Methodology and redistribution notes

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