What the vulnerability does
01Description
The Visitor Logic Lite plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.0.3 via deserialization of untrusted input from the `lpblocks` cookie. This is due to the `lp_track()` function passing unsanitized cookie data directly to the `unserialize()` 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 granted they can access the WordPress site.
Explanation of Vulnerability in Simple Terms
02Summary
Visitor Logic Lite versions 1.0.3 and earlier contain a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary code on the site. The vulnerability requires specific network conditions to exploit but does not require user interaction. An attacker can gain full control of the affected WordPress installation by sending a specially crafted request.
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 compromise of the site, including data theft, malware injection, and loss of availability.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required, but exploitation requires specific conditions.
Key dates
06Disclosure timeline
December 12, 2025
CVE published
April 8, 2026
Record updated
