CVE-2026-66583
CriticalCVSS 9.8Summary
Unauthenticated PHP Object Injection vulnerability in Forminator versions up to 1.57.0. An attacker can send crafted data to execute arbitrary code.
Risk Assessment
Risk of taking over the WordPress site and executing malicious code without authentication.
Recommendation
Update the Forminator plugin to the latest available version that includes the security fix.
Other vulnerabilities in Forminator
See all- CVE-2026-56071High
Versions of Forminator up to 1.53.1 are vulnerable to unauthenticated Cross Site Scripting (XSS). An attacker can exploit this vulnerability to inject malicious JavaScript code.
- CVE-2026-82220Medium
The Forminator plugin in versions 1.57.1 and earlier contains an unauthenticated other vulnerability type. An attacker without authentication can exploit this flaw.
- CVE-2026-28143High
Unauthenticated Cross Site Scripting (XSS) in Forminator versions up to and including 1.56.0.
- CVE-2026-28111High
Contributor Privilege Escalation vulnerability in Forminator versions up to 1.56.0. A user with Contributor role can escalate their privileges.
- CVE-2026-57815High
The Forminator plugin for WordPress contains a path traversal vulnerability that allows an attacker to access files outside the restricted directory. The issue affects versions up to and including 1.55.0.2.
- CVE-2026-57814High
The Forminator plugin for WordPress contains a DOM-based XSS vulnerability due to improper input neutralization during web page generation. The issue affects versions up to and including 1.55.0.1.
Original NVD description (English source)
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

