CVE-2026-3601
Deferred Deferred - Pending Action
Unauthorized Data Modification in User Registration & Membership WordPress Plugin

Publication date: 2026-05-05

Last updated on: 2026-05-05

Assigner: Wordfence

Description
The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.
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Meta Information
Published
2026-05-05
Last Modified
2026-05-05
Generated
2026-06-16
AI Q&A
2026-05-05
EPSS Evaluated
2026-06-15
NVD
CVE-2026-3601
EUVD
EUVD-2026-27241
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
wpengine user_registration_and_membership to 5.1.4 (inc)
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

The User Registration & Membership plugin for WordPress has a vulnerability due to a missing capability check in the embed_form_action() function in all versions up to and including 5.1.4.

This flaw allows authenticated attackers with Contributor-level access or higher to append shortcode content to arbitrary pages they do not own or have permission to edit.

Impact Analysis

This vulnerability can allow attackers with limited access (Contributor-level or above) to modify content on pages they should not be able to edit by appending shortcode content.

Such unauthorized modifications could lead to content manipulation, potential misinformation, or insertion of malicious shortcodes that affect site behavior or appearance.

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