CVE-2026-66712

Deferred Deferred - Pending Action

Unauthenticated Broken Access Control in Simple Membership

Publication date: 2026-08-06

Last updated on: 2026-08-12

Assigner: Patchstack

Description

Unauthenticated Broken Access Control in Simple Membership <= 4.7.8 versions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-06

Last Modified

2026-08-12

Generated

2026-08-17

AI Q&A

2026-08-06

EPSS Evaluated

2026-08-16

NVD

CVE-2026-66712

EUVD

EUVD-2026-53937

Affected Vendors & Products

Vendor	Product	Version / Range
simple_membership	simple_membership	to 4.7.8 (inc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This vulnerability is an Unauthenticated Broken Access Control issue in the Simple Membership plugin versions 4.7.8 and below. It allows unauthorized users to perform actions they should not be able to due to improper access restrictions.

Detection Guidance

Since this is an unauthenticated broken access control issue in Simple Membership <= 4.7.8, detection requires checking for unauthorized access to restricted functionality. Review server logs for unusual requests to admin endpoints or sensitive pages. Inspect network traffic for requests bypassing authentication checks. Verify if user roles or permissions can be manipulated without proper validation.

Impact Analysis

An attacker could exploit this to gain unauthorized access to sensitive functions or data within the Simple Membership plugin, potentially leading to data breaches or unauthorized modifications.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating compliance requirements such as GDPR or HIPAA, which mandate strict access controls and data protection measures.

Mitigation Strategies

Update Simple Membership plugin to the latest version beyond 4.7.8 to patch the unauthenticated broken access control vulnerability.

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