Unauthenticated PHP Object Injection in Integration for Mailchimp and Contact Form 7 by WordPress
CVE-2026-49765

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Integration For Mailchimp And Contact Form 7, WPforms, Elementor, Ninja Forms
Vendor
CVE Published:
15 June 2026

What is CVE-2026-49765?

An unauthenticated PHP Object Injection vulnerability exists in the Integration for Mailchimp and Contact Form 7, impacting versions of WPForms, Elementor, and Ninja Forms. This flaw allows attackers to craft specific requests that could lead to malicious code execution in the context of the affected plugins. As a result, unauthorized users may exploit this vulnerability to compromise the integrity and security of the web applications utilizing these plugins.

Affected Version(s)

Integration for Mailchimp and Contact Form 7, WPForms, Elementor, Ninja Forms <= 1.1.8

References

https://patchstack.com/database/wordpress/plugin/cf7-mail...
vdb-entry

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Frissi0n | Patchstack Bug Bounty Program
.