Formidable Forms Signature Online Contract Automation <= 2.0.1 - Unauthenticated Insecure Direct Object Reference
Strategic Overview
- Status
- Patched in 2.0.2
- Affected Plugin
- Formidable Forms Signature Online Contract Automation
- Affected Version
<= 2.0.1- CVSS
- 5.3Medium
- Weakness type
- CWE-639 · Authorization Bypass Through User-Controlled Key
- CVE
CVE-2026-65523
At a glance
CVE-2026-65523 is a medium-severity Authorization Bypass Through User-Controlled Key vulnerability in the Formidable Forms Signature Online Contract Automation WordPress plugin, affecting versions <= 2.0.1. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.0.2; sites on affected versions should update now. Disclosed July 2026, reported by Abdullah Kareem "cyberkareem".
Vulnerability Overview
The Formidable Forms Signature Online Contract Automation plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 2.0.1 due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to perform an unauthorized action.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-639: Authorization Bypass Through User-Controlled Key
Reaching this weakness in Formidable Forms Signature Online Contract Automation <= 2.0.1 takes no account at all. Authorization bypass through a user-controlled key, often called insecure direct object reference, means the application looks up a record by an identifier from the request without checking that the caller owns it.
Changing a number in the request is enough to read or modify other users' records, which on commerce and membership sites means customer data. For Formidable Forms Signature Online Contract Automation the fix is 2.0.2: builds <= 2.0.1 are affected, anything from 2.0.2 onward is not.
Remediation
Update to version 2.0.2, or a newer patched version
How WordSec helps
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Formidable Forms Signature Online Contract Automation 2.0.2 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
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