Slek Gateway for WooCommerce <= 1.0 - Unauthenticated Insufficiently Protected Credentials via Payment Redirect Form Hidden Fields

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5.3
Exposure of Sensitive Information to an Unauthorized Actor
CVE CVE-2026-7626
CVSS 5.3 (Medium)
Publicly Published May 11, 2026
Last Updated May 12, 2026
Researcher KEVIN LEE (crattack) - OPCIA

Description

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.

References

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Vulnerability Details for Slek Gateway for WooCommerce

Slek Gateway for WooCommerce

Software Type Plugin
Software Slug slek-gateway-for-woocommerce (view on wordpress.org)
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 1.0

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