Threat intelligence

Forminator Forms <= 1.57.0 - Unauthenticated DOM-Based Cross-Site Scripting via 'error_description' Parameter

CVE-2026-18328 · forminator

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

Vulnerability: Forminator Forms <= 1.57.0 - Unauthenticated DOM-Based Cross-Site Scripting via 'error_description' Parameter
Affected software: forminator(Plugin)
Affected versions: ≤ 1.57.0
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2026-18328
Published: 24 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 a669f05d-67c7-45ac-ae56-e7c637ece880). Methodology and redistribution notes

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