CVE-2026-66583
Deferred Deferred - Pending Action

Unauthenticated PHP Object Injection in Forminator

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: Patchstack

Description
Unauthenticated PHP Object Injection in Forminator <= 1.57.0 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-66583
EUVD
EUVD-2026-63332

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wpforms forminator to 1.57.0 (inc)
wpform forminator to 1.57.0 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is an unauthenticated PHP Object Injection vulnerability in the WordPress Forminator plugin versions 1.57.0 and below. It allows attackers to inject malicious PHP objects into the application, potentially leading to code execution, SQL injection, or other attacks if a suitable POP chain exists.

Detection Guidance

Detecting this vulnerability requires checking if the Forminator plugin version is 1.57.0 or below. Inspect WordPress installations for the plugin and verify the version. Use commands like 'wp plugin list' in WP-CLI or check the plugin's version in the WordPress admin panel.

Impact Analysis

This vulnerability can allow attackers to execute arbitrary code, manipulate databases, access sensitive files, or cause denial of service on your WordPress site. It affects unauthenticated users, meaning attackers do not need credentials to exploit it.

Compliance Impact

This vulnerability could lead to unauthorized data access, modification, or deletion, which may violate GDPR and HIPAA compliance requirements for data protection and integrity. Unauthenticated PHP Object Injection may expose sensitive user data, triggering regulatory breach notifications and penalties.

Mitigation Strategies

Immediately update the Forminator plugin to version 1.57.1 or later. Enable auto-updates for the plugin to prevent future vulnerabilities. If updating is not possible, apply Patchstack's mitigation rule to block attacks until an update is applied.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-66583. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart