What the vulnerability does
01Description
The Cost Calculator Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.0.11 via the (template body). This makes it possible for unauthenticated attackers to extract the plaintext Stripe secret key, Razorpay secret key, and PayPal client_secret embedded in the page source of any page containing a calculator, enabling full control of the merchant's payment gateway accounts. This exposure only occurs when the 'use in all calculators' option is enabled for one or more payment gateways in the plugin's global settings.
Explanation of Vulnerability in Simple Terms
02Summary
Cost Calculator Builder versions 4.0.11 and earlier expose sensitive information that can be accessed over the network without authentication. An attacker can retrieve this data directly without needing to log in or interact with a user. The exposure is limited to information disclosure; the attacker cannot modify data or disrupt service.
What an attacker can do
03Attacker Capabilities
Read sensitive information from the plugin without logging in.
Potential impact on your site
04Site Impact
Sensitive data stored by the plugin may be visible to unauthenticated visitors.
Conditions required to exploit
05Prerequisites
Network access to the site; no authentication or user interaction required.
Key dates
06Disclosure timeline
July 11, 2026
CVE published
July 13, 2026
Record updated
