What the vulnerability does
01Description
The WS Form LITE – Drag & Drop Contact Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.10.80 via deserialization of untrusted input from form submission meta values. 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
WS Form LITE versions up to 1.10.80 contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code on the site without user interaction. The plugin unsafely deserializes untrusted data, enabling remote code execution. All sites running affected versions should update immediately.
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: attackers can steal data, modify content, install malware, or delete everything.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
August 22, 2026
CVE published
