Cost Calculator Builder <= 4.0.11 - Unauthenticated Sensitive Information Exposure of Payment Gateway Secret Keys
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| StylemixThemes | Cost Calculator Builder | up to 4.0.11 | — | No fix listed | CNA |
- Cost Calculator Builder VendorStylemixThemes Affected up to 4.0.11 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:stylemixthemes:cost_calculator_builder:*:*:*:*:*:*:*:* | — | — | StylemixThemes |
- cpe:2.3:a:stylemixthemes:cost_calculator_builder:*:*:*:*:*:*:*:* Versions — — ·StylemixThemes
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-10865
- 2026-10-03 Alias added: GHSA-7cvm-m8m6-prmw
References
Other 10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/29de766d-5e7e-46b4-acac-feec5b33589e?source=cve
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/4.0.5/templates/frontend/render.php#L281
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/4.0.5/templates/frontend/render.php#L61
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/4.0.5/templates/frontend/render.php#L28
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/4.0.5/includes/functions.php#L748
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/3.6.17/templates/frontend/render.php#L281
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/3.6.17/templates/frontend/render.php#L61
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/3.6.17/templates/frontend/render.php#L28
- https://plugins.trac.wordpress.org/browser/cost-calculator-builder/tags/3.6.17/includes/functions.php#L748
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3578557%40cost-calculator-builder&new=3578557%40cost-calculator-builder
More StylemixThemes vulnerabilities
- TI-2024-01413 MasterStudy LMS WordPress Plugin – for Online Courses and Education <= 3.2.5 - Unauthenticated SQL Injection CVSS 3.1CRITICAL 9.8
- TI-2022-00364 MasterStudy LMS < 2.7.6 - Unauthenticated Admin Account Creation CVSS 3.1CRITICAL 9.8
- TI-2024-24620 WordPress Consulting Elementor Widgets plugin <= 1.3.0 - Remote Code Execution (RCE) vulnerability CVSS 3.1CRITICAL 9.9
- TI-2023-02655 BookIt <= 2.3.7 - Authentication Bypass CVSS 3.1CRITICAL 9.8
- TI-2024-05535 MasterStudy LMS < 3.3.24 - Privilege Escalation to Instructor CVSS 3.1CRITICAL 9.1
- TI-2024-24618 WordPress Consulting Elementor Widgets plugin <= 1.3.0 - Unauthenticated Local File Inclusion vulnerability CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-10865 · CVE Program
- CVE-2026-10865 · NVD
- FIRST EPSS
- GHSA-7cvm-m8m6-prmw · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences