What the vulnerability does
01Description
The Return Refund and Exchange For WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.5.5 via the wps_rma_fetch_order_msgs() due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read other user's order messages.
Explanation of Vulnerability in Simple Terms
02Summary
The Return Refund and Exchange For WooCommerce plugin through version 4.5.5 contains an authorization flaw that allows authenticated users with low privileges to read and modify sensitive data. An attacker with a basic user account can access or alter information they should not have permission to view or change. Update to a version newer than 4.5.5 to resolve this issue.
What an attacker can do
03Attacker Capabilities
Read and modify sensitive data they should not have access to.
Potential impact on your site
04Site Impact
Customer data or refund/exchange records may be exposed or altered by unauthorized users with basic accounts.
Conditions required to exploit
05Prerequisites
Attacker must have a low-privilege user account on the site (e.g., customer or subscriber role).
Key dates
06Disclosure timeline
November 21, 2025
CVE published
April 8, 2026
Record updated