Sensitive Information Exposure Bug in Cost Calculator Builder Plugin for WordPress
CVE-2026-10865

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Cost Calculator Builder
Vendor
CVE Published:
11 July 2026

What is CVE-2026-10865?

The Cost Calculator Builder plugin for WordPress contains a vulnerability that allows unauthenticated attackers to access sensitive information. Specifically, if the 'use in all calculators' option for one or more payment gateways is enabled, attackers can extract plaintext keys, such as the Stripe secret key, Razorpay secret key, and PayPal client_secret, directly from the page source of any calculator-enabled page. This exposure can lead to unauthorized access and control of the merchant's payment gateway accounts, posing a significant risk to the security of online transactions.

Affected Version(s)

Cost Calculator Builder 0 <= 4.0.11

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/cost-calculato...
https://plugins.trac.wordpress.org/browser/cost-calculato...

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

oper999
.