CVE-2026-81431
Deferred Deferred - Pending Action

Registration Form for WooCommerce Plugin Role Escalation

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: WPScan

Description
The Registration Form for WooCommerce WordPress plugin before 1.1.3 does not validate that the form referenced during registration is a legitimate registration form, reading the permitted-role allow-list from an arbitrary attacker-controlled post instead. A user able to create a post (Contributor and above) can therefore register a new account with an arbitrary role, including Administrator, leading to full site takeover. This is an incomplete fix of CVE-2026-54807.

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Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-10
AI Q&A
2026-09-10
EPSS Evaluated
N/A
NVD
CVE-2026-81431
EUVD
EUVD-2026-75266

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
woocommerce registration_form 1.1.0
woocommerce registration_form 1.1.1
woocommerce registration_form to 1.1.3 (exc)
woocommerce registration_form 1.1.3

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

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Executive Summary

This vulnerability affects the Registration Form for WooCommerce plugin before version 1.1.3. It allows users with Contributor-level access or higher to register a new account with an arbitrary role, including Administrator, by exploiting an unvalidated parameter during registration. The plugin fails to verify if the referenced form is legitimate, instead reading the permitted role from an attacker-controlled post.

Detection Guidance

Check if the 'Registration Form for WooCommerce' plugin is installed and verify its version. If the version is between 1.1.0 and 1.1.2, the system is vulnerable. Use commands like 'wp plugin list' in WordPress CLI or inspect the plugin files for version details.

Impact Analysis

An attacker with Contributor-level access or higher could escalate their privileges to Administrator, gaining full control over the WordPress site. This could lead to unauthorized changes, data theft, or complete site compromise.

Compliance Impact

This vulnerability allows unauthorized privilege escalation to Administrator, which could lead to unauthorized access to sensitive data. This may violate GDPR's data protection requirements and HIPAA's access control provisions if exploited.

Mitigation Strategies

Update the 'Registration Form for WooCommerce' plugin to version 1.1.3 or later immediately. If updating is not possible, consider disabling the plugin temporarily until an update is applied.

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