CVE-2026-49106 CRITICAL

CVE-2026-49106: WordPress Integration for Contact Form 7 and Constant Contact plugin <= 1.1.6 - PHP Object Injection vulnerability

Vendor Crm Perks

Product Integration for Contact Form 7 and Constant Contact

Weakness CWE-502 · Unsafe deserialization

Published June 15, 2026

Last update June 16, 2026

View on NVD All CVEs

CVSS base score

9.8/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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

Explanation of Vulnerability in Simple Terms

02Summary

The Integration for Contact Form 7 and Constant Contact plugin contains a deserialization vulnerability in versions up to 1.1.6. An attacker can send a specially crafted request over the network to deserialize untrusted data, leading to remote code execution on the site. No authentication or user interaction is required to exploit this flaw.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site and take full control of it.

Potential impact on your site

04Site Impact

Complete site compromise: attacker can steal data, modify content, install malware, or delete everything.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction needed.

Key dates

06Disclosure timeline

June 15, 2026 CVE published

June 16, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-49106 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

Related vulnerabilities

Identifiers

CVE CVE-2026-49106

CWE CWE-502

CVSS 9.8 / CRITICAL

Affected versions