MetForm Pro <= 3.9.7 - Unauthenticated Payment Amount Manipulation via 'mf-calculation'
| CVE | CVE-2026-1782 |
|---|---|
| CVSS | 5.3 (Medium) |
| Publicly Published | April 14, 2026 |
| Last Updated | April 15, 2026 |
| Researcher |
andrea bocchetti
|
Description
The MetForm Pro plugin for WordPress is vulnerable to Improper Input Validation in all versions up to, and including, 3.9.7 This is due to the payment integrations (Stripe/PayPal) trusting a user-submitted calculation field value without recomputing or validating it against the configured form price. This makes it possible for unauthenticated attackers to manipulate the payment amount via the 'mf-calculation' field in the form submission REST request granted there exists a specific form with this particular configuration.
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Vulnerability Details for MetForm Pro
| Software Type | Plugin |
|---|---|
| Software Slug | metform-pro |
| Patched? | Yes |
| Remediation | Update to version 3.9.8, or a newer patched version |
| Affected Version |
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| Patched Version |
|
Recent vulnerabilities in MetForm Pro
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | MetForm Pro <= 3.9.8 - Missing Authorization | CVE-2026-24611 | Phat RiO | March 12, 2026 | |
| 2 | MetForm Pro <= 3.9.6 - Unauthenticated Stored Cross-Site Scripting | CVE-2026-1261 | andrea bocchetti | March 9, 2026 |
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