CVE-2026-2599 CRITICAL

CVE-2026-2599: Database for Contact Form 7, WPforms, Elementor forms <= 1.4.7 - Unauthenticated PHP Object Injection via 'download_csv'

Vendor Crmperks
Product Database for Contact Form 7, WPforms, Elementor forms
Weakness CWE-502 · Unsafe deserialization
Published March 5, 2026
Last update April 8, 2026

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

The Database for Contact Form 7, WPforms, Elementor forms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.4.7 via deserialization of untrusted input in the 'download_csv' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.

Explanation of Vulnerability in Simple Terms

02Summary

The Database for Contact Form 7, WPforms, and Elementor forms plugin for WordPress contains a deserialization vulnerability in versions up to 1.4.7. An attacker can send a specially crafted request to deserialize untrusted data, leading to remote code execution on the affected site. No authentication or user interaction is required to exploit this vulnerability.

What an attacker can do

03Attacker Capabilities

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

Potential impact on your site

04Site Impact

Complete compromise of the WordPress site, including data theft, malware installation, and site defacement.

Conditions required to exploit

05Prerequisites

Network access to the site; no authentication or user interaction required.

Key dates

06Disclosure timeline

March 5, 2026 CVE published
April 8, 2026 Record updated

Related vulnerabilities

08Related CVE