What the vulnerability does
01Description
The Slek Gateway for WooCommerce plugin for WordPress is vulnerable to Information Exposure in version 1.0. This is due to the wsb_handle_slek_payment_redirect() function placing the merchant's slek_key and slek_secret API credentials directly into a client-side HTML form, and additionally embedding the slek_secret as a plaintext GET parameter in the IPN callback URL. This makes it possible for unauthenticated attackers who can place an order on the affected store to extract the merchant's API credentials by viewing the HTML source or using browser DevTools on the WooCommerce order-pay page before the JavaScript auto-submit fires.
Explanation of Vulnerability in Simple Terms
02Summary
The Slek Gateway for WooCommerce contains an information exposure vulnerability that allows attackers to modify data without authentication. The flaw affects all versions up to 1.0 and requires no user interaction. Site administrators should update to a patched version when available.
What an attacker can do
03Attacker Capabilities
Modify data on the site without logging in.
Potential impact on your site
04Site Impact
Attackers can alter site data, potentially affecting orders, settings, or customer information.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
May 12, 2026
CVE published
May 12, 2026
Record updated
