What the vulnerability does
01Description
The PDF Invoices and Packing Slips For WooCommerce plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.3.7 via deserialization of untrusted input via the order_id parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable plugin. 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
The PDF Invoices and Packing Slips For WooCommerce plugin through version 1.3.7 deserializes untrusted data without validation. A logged-in attacker with low privileges can exploit this to execute arbitrary PHP code on the site. This affects all data confidentiality, integrity, and availability.
What an attacker can do
03Attacker Capabilities
Run arbitrary PHP code on the site with the privileges of the web server.
Potential impact on your site
04Site Impact
Complete compromise of the WordPress site, including data theft, malware injection, and service disruption.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account (e.g., customer or subscriber role).
Key dates
06Disclosure timeline
March 7, 2024
CVE published
April 8, 2026
Record updated
