Unauthenticated PHP Object Injection in WP Zendesk for Contact Form 7

Publication date: 2026-06-15

Last updated on: 2026-06-15

Assigner: Patchstack

Description

Unauthenticated PHP Object Injection in WP Zendesk for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms <= 1.1.4 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-2026-49105

Affected Vendors & Products

Vendor	Product	Version / Range
wp_zendesk	contact_form_7	to 1.1.4 (inc)
wpforms	wpforms	to 1.1.4 (inc)
elementor	elementor	to 1.1.4 (inc)
formidable	formidable	to 1.1.4 (inc)
ninja_forms	ninja_forms	to 1.1.4 (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 the WP Zendesk plugin for several WordPress form plugins including Contact Form 7, WPForms, Elementor, Formidable, and Ninja Forms, in versions up to 1.1.4.

PHP Object Injection occurs when untrusted user input is unserialized, allowing an attacker to inject malicious objects that can lead to various attacks such as remote code execution or data manipulation.

Impact Analysis

This vulnerability has a very high severity with a CVSS score of 9.8, indicating it can have a critical impact.

Since it is unauthenticated, attackers do not need valid credentials to exploit it.
Potential impacts include full compromise of the affected WordPress site, including confidentiality, integrity, and availability.
Attackers could execute arbitrary code, manipulate data, or disrupt services.

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