Vulnerabilities / Fluent Forms / WPSEC-2026-0007
Fluent Forms <= 6.2.14 - Unauthenticated Payment Bypass via Zero or Invalid Payment Values
Medium 5.3
CWE-840Fixed in 6.2.15
- ID
- WPSEC-2026-0007
- Plugin
- Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder (fluentform)
- Affected
- all versions before 6.2.15
- Remediation
- Update to 6.2.15 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- Weakness
- CWE-840
- Usage
- Plugin High · Affected versions High among sites WPSec scans, 2026-10-22
- Attack surface
- Fluent Forms on WPSec AttackSurface
- Fix released
- Published
Description
The Fluent Forms plugin for WordPress is vulnerable to a payment bypass in all versions up to, and including, 6.2.14 due to improper validation of payment inputs, where a '0' value skipped option validation and invalid payment amounts or quantities were accepted. This makes it possible for unauthenticated attackers to submit payment forms with a zero, negative, or unlisted payment value to skip payment, while Payment Success notifications were still sent (where configured) as if the order had been paid.
References
- https://wpsec.com/vuln/WPSEC-2026-0007/
- https://plugins.svn.wordpress.org/fluentform/tags/6.2.15/
- https://wordpress.org/plugins/fluentform/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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