# CVE-2026-65052: Saturday Drive Ninja Forms improper input validation in form calculations

Source: https://junglewise.ai/threats/cve-2026-65052-saturday-drive-ninja-forms-improper-input-validation-in-form  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-21. Updated: 2026-07-21  
License: CC BY 4.0 with a link back

CVE-2026-65052 · Severity: high · CVSS 7.5 · Published 2026-07-21

Ninja Forms is a popular WordPress plugin used to create contact and payment forms. A security flaw allows unauthenticated users to bypass price settings and manually set their own payment totals, potentially reducing costs to zero. This could lead to significant financial loss for businesses using the plugin to process orders or donations.

Technologies: [Saturday Drive Ninja Forms](https://junglewise.ai/threats/technologies/ninja-forms). Vendors: [Saturday Drive](https://junglewise.ai/threats/vendors/saturday-drive).

## Quick answers

**Is CVE-2026-65052 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-65052 being exploited in the wild.

**How severe is CVE-2026-65052?** High severity, with a CVSS score of 7.5, published 21 July 2026.

**Which products and versions are affected?** Saturday Drive Ninja Forms <= 3.14.8.

**Is there a fix for CVE-2026-65052?** A patch was published on 2026-07-21: Fixed in version 3.14.9 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-65052 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-65052?** Check whether you run Saturday Drive Ninja Forms at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An improper input validation vulnerability (CWE-472) exists in Ninja Forms versions 3.14.8 and prior. The flaw resides in the get_calc_value() method, which fails open when processing ListSelect or ListRadio fields. An unauthenticated remote attacker can tamper with form submission payloads sent to the AJAX submit endpoint by providing values that do not match any pre-configured options. This causes the plugin to accept attacker-controlled numeric values for calculations, allowing for the manipulation of payment totals. The issue is fixed in version 3.14.9.

## Affected products

- Saturday Drive Ninja Forms <= 3.14.8

## Timeline

- 2026-07-21: advisory
- 2026-07-21: disclosed
- 2026-07-21: patched: Fixed in version 3.14.9

## References

- [https://wordpress.org/plugins/ninja-forms/](https://wordpress.org/plugins/ninja-forms/)
- [https://wordpress.org/plugins/ninja-forms/changelog/](https://wordpress.org/plugins/ninja-forms/changelog/)
- [https://www.vulncheck.com/advisories/ninja-forms-calculation-and-payment-total-tampering-via-fail-open-get-calc-value-in-listselect-and-listradio-fields](https://www.vulncheck.com/advisories/ninja-forms-calculation-and-payment-total-tampering-via-fail-open-get-calc-value-in-listselect-and-listradio-fields)

## Related threats

- [Ninja Forms SQL injection in form import settings](https://junglewise.ai/threats/cve-2026-15663-ninja-forms-sql-injection-in-form-import-settings)
- [Saturday Drive Ninja Forms validation bypass in AJAX submission handler](https://junglewise.ai/threats/cve-2026-65051-saturday-drive-ninja-forms-validation-bypass-in-ajax-submission)
- [Saturday Drive Ninja Forms missing authorization in submissions-table block](https://junglewise.ai/threats/cve-2026-65050-saturday-drive-ninja-forms-missing-authorization-in-submissions)
- [Saturday Drive Ninja Forms incorrect authorization in WordPress Multisite](https://junglewise.ai/threats/cve-2026-65049-saturday-drive-ninja-forms-incorrect-authorization-in-wordpress)
- [Saturday Drive Ninja Forms stored XSS in Repeatable Fieldset](https://junglewise.ai/threats/cve-2026-65048-saturday-drive-ninja-forms-stored-xss-in-repeatable-fieldset)