CVE-2026-17563
Received Received - Intake

Unauthenticated Post Creation in User Frontend WordPress Plugin

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: WPScan

Description
The User Frontend WordPress plugin before 4.3.11 does not enforce its subscription-purchase requirement when processing frontend post submissions, only when rendering the form, allowing unauthenticated users to create and, depending on the form's configuration, immediately publish posts through forms restricted to paying subscribers.

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Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-17563
EUVD
EUVD-2026-70035

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
wp_frontend frontend_plugin to 4.3.11 (exc)
wp_user_frontend wp_user_frontend to 4.3.11 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability in the User Frontend WordPress plugin before version 4.3.11 allows unauthenticated users to bypass subscription requirements and submit posts through forms that should only be accessible to paying subscribers. The plugin checks subscription status when rendering the form but fails to enforce it during actual post submissions, enabling unauthorized content creation.

Detection Guidance

Check the installed version of the WP User Frontend plugin using the WordPress admin dashboard or via command line with: wp plugin list --name='wp-user-frontend'. If the version is below 4.3.11, the plugin is vulnerable.

Impact Analysis

Unauthenticated users could create and publish posts on your WordPress site without paying for subscriptions. This could lead to spam, unauthorized content, or reputational damage if malicious or inappropriate posts appear on your site.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized users to create and publish posts without proper authentication or subscription verification. Uncontrolled post creation may lead to unauthorized data exposure or misuse, violating data protection principles under GDPR and HIPAA's access control requirements.

Mitigation Strategies

Update the WP User Frontend plugin to version 4.3.11 or later immediately. Disable the plugin temporarily if an update is not immediately available. Review post submission forms to ensure they are not set to auto-publish content.

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