CVE-2026-7753

Cost Calculator Builder <= 3.6.17 - Missing Authorization to Authenticated (Subscriber+) Sensitive Information Disclosure

2026-08-04 17:05
momopon1415

Strategic Overview

Status
Patched in 4.0.3
Affected Plugin
Cost Calculator Builder
Affected Version
<= 3.6.17
CVSS
6.5Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-7753
View all Cost Calculator Builder vulnerabilities

At a glance

CVE-2026-7753 is a medium-severity Missing Authorization vulnerability in the Cost Calculator Builder WordPress plugin, affecting versions <= 3.6.17. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high confidentiality impact). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 4.0.3; sites on affected versions should update now. Disclosed August 2026, reported by momopon1415.

Vulnerability Overview

The Cost Calculator Builder plugin for WordPress is vulnerable to unauthorized access of sensitive data due to a missing capability check on the `cost-calculator-custom-export-run` AJAX action (handler `CCBExportImport::export_calculators()`) in all versions up to, and including, 3.6.17. The handler only verifies a nonce, but the corresponding `ccb_export_nonce` is broadcast on every wp-admin page (including pages reachable to Subscribers, such as `/wp-admin/profile.php`) by the `ccb_add_admin_nonces` callback hooked to `admin_head`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to export every calculator's full configuration — including stored Stripe secret keys, PayPal client secrets, Razorpay secret keys, webhook secret keys, and reCAPTCHA secret keys.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality.

CWE-862: Missing Authorization

Cost Calculator Builder <= 3.6.17 carries this weakness at export_calculators(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For Cost Calculator Builder the fix is 4.0.3: builds <= 3.6.17 are affected, anything from 4.0.3 onward is not.

Remediation

Update to version 4.0.3, or a newer patched version

How WordSec helps

Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: Cost Calculator Builder 4.0.3 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-7753https://www.wordfence.com/threat-intel/vulnerabilities/id/89de168e-1bce-4e11-a765-afc1d7dce8fehttps://nvd.nist.gov/vuln/detail/CVE-2026-7753

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C