What the vulnerability does
01Description
The Hash Form – Drag & Drop Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.1.0 via deserialization of untrusted input in the 'process_entry' function. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.
Explanation of Vulnerability in Simple Terms
02Summary
Hash Form versions up to 1.1.0 contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code on the site. The vulnerability requires specific conditions to trigger but does not require user interaction. Sites running affected versions should update immediately to prevent remote code execution.
What an attacker can do
03Attacker Capabilities
Run their own code on the site without authentication.
Potential impact on your site
04Site Impact
Complete site compromise including data theft, malware injection, and service disruption.
Conditions required to exploit
05Prerequisites
Network access to the site; specific attack conditions must be met (high complexity).
Key dates
06Disclosure timeline
May 23, 2024
CVE published
April 8, 2026
Record updated
