Unauthenticated PHP Object Injection Vulnerability in Contact Form 7 Integration by Constant Contact
CVE-2026-49106

9.8CRITICAL

Key Information:

Vendor

WordPress
Status
Integration For Contact Form 7 And Constant Contact
Vendor
CVE Published:
15 June 2026

What is CVE-2026-49106?

This vulnerability involves an unauthenticated PHP object injection flaw within the Integration for Contact Form 7 and Constant Contact plugin. Versions up to 1.1.6 are susceptible, allowing attackers to exploit this weakness without authentication. If abused, it can lead to unauthorized access and manipulation of the application's internal objects. It's crucial for administrators using this integration to update to a patched version promptly to safeguard against potential exploits.

Affected Version(s)

Integration for Contact Form 7 and Constant Contact <= 1.1.6

References

https://patchstack.com/database/wordpress/plugin/cf7-cons...
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
.