# Forminator Forms <= 1.57.3.1 - Unauthenticated Insecure Direct Object Reference via Stripe PaymentIntent ID

- **ID:** WPSEC-2026-0624
- **Plugin:** Forminator Forms – Contact Form, Payment Form & Custom Form Builder (`forminator`), https://wordpress.org/plugins/forminator/
- **Affected versions:** all versions before 1.58.0
- **Fixed in:** 1.58.0 (Update to 1.58.0 or later.)
- **Severity:** Medium 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
- **Weakness:** CWE-639
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-10-08)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/forminator
- **Fix released:** 2026-10-07
- **Published:** 2026-10-08
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0624/

## Description

The Forminator Forms plugin for WordPress is vulnerable to Insecure Direct Object Reference in its Stripe payment field in all versions up to, and including, 1.57.3.1 due to client-supplied PaymentIntent IDs not being tied to the current form or browser, and a site-wide shared PaymentIntent cache. This makes it possible for unauthenticated attackers to reuse or modify PaymentIntents belonging to other visitors or forms and obtain their client secrets.

## References

- https://wpsec.com/vuln/WPSEC-2026-0624/
- https://plugins.svn.wordpress.org/forminator/tags/1.58.0/
- https://wordpress.org/plugins/forminator/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0624/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.