Unauthenticated PHP Object Injection in Contact Form 7 Integration

Publication date: 2026-06-15

Last updated on: 2026-06-15

Assigner: Patchstack

Description

Unauthenticated PHP Object Injection in Integration for Contact Form 7 and Constant Contact <= 1.1.6 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-15

Last Modified

2026-06-15

Generated

2026-07-06

AI Q&A

2026-06-16

EPSS Evaluated

2026-07-04

NVD

CVE-2026-49106

Affected Vendors & Products

Vendor	Product	Version / Range
contact_form_7	contact_form_7	to 1.1.6 (inc)
constant_contact	constant_contact	to 1.1.6 (inc)

Helpful Resources

Exploitability

CWE

KEV

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

Attack-Flow Graph

Executive Summary

This vulnerability is an unauthenticated PHP Object Injection affecting Integration for Contact Form 7 and Constant Contact versions up to 1.1.6. It allows an attacker to inject malicious PHP objects without needing to be authenticated.

Impact Analysis

The vulnerability has a high severity with a CVSS score of 9.8, indicating it can lead to complete compromise of confidentiality, integrity, and availability. An attacker could execute arbitrary code, manipulate data, or cause denial of service without any user interaction or privileges.

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