Simple Membership <= 4.7.8 - Missing Authorization

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5.3
Missing Authorization
CVE CVE-2026-66712
CVSS 5.3 (Medium)
Publicly Published August 5, 2026
Last Updated August 15, 2026
Researcher Ananda Dhakal

Description

The Simple Membership plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 4.7.8. This makes it possible for unauthenticated attackers to perform an unauthorized action.

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Vulnerability Details for Simple Membership

Simple Membership

Software Type Plugin
Software Slug simple-membership (view on wordpress.org)
Patched? Yes
Remediation Update to version 4.7.9, or a newer patched version
Affected Version
  • <= 4.7.8
Patched Version
  • 4.7.9

Recent vulnerabilities in Simple Membership

Simple Membership <= 4.8.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Country Field
6.4
CVE-2026-103427
Oct 9, 2026
Researcher: Maciej Komorowski
Simple Membership <= 4.8.3 - Missing Authorization to Unauthenticated Account Takeover and Sensitive Information Disclosure via 'email' Parameter on Activation Endpoints
7.5
CVE-2026-97337
Oct 2, 2026
Researcher: Kuba
Simple Membership <= 4.8.2 - Missing Authorization
4.3
CVE-2026-74000
Sep 16, 2026
Researcher: Ananda Dhakal
Simple Membership < 4.7.8 - Missing Authorization
4.3
CVE-2026-88764
Sep 11, 2026
Researcher: Charles Vosburgh
Simple Membership <= 4.8.1 - Unauthenticated Authentication Bypass to Administrator Account Takeover via Multisite Identity Binding
5.3
CVE-2026-77194
Aug 31, 2026
Researcher: Kittipat Jitphonchana
Simple Membership <= 4.7.7 - Missing Authorization
5.3
CVE-2026-15930
Jul 24, 2026
Researcher: Brandon Steed
Simple Membership <= 4.7.7 - Unauthenticated Stored Cross-Site Scripting
7.2
CVE-2026-15931
Jul 24, 2026
Researcher: Yaswanth Reddy Sunkara
Simple Membership <= 4.7.6 - Unauthenticated Payment Verification Bypass
5.3
CVE-2026-14936
Jul 13, 2026
Researcher: Muni Nitish Kumar Yaddala
Simple Membership <= 4.7.5 - Missing Authorization to Unauthenticated Arbitrary Member Account Deactivation via Forged Stripe 'charge.refunded' Webhook
5.3
CVE-2026-12093
Jun 17, 2026
Researcher: Nikita Fenko
Simple Membership <= 4.7.4 - Unauthenticated Stored Cross-Site Scripting
7.2
CVE-2026-11855
Jun 15, 2026
Researcher: Duy Tran
# Title CVE ID CVSS Researchers Date
1 Simple Membership <= 4.8.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via Country Field CVE-2026-103427 6.4 Maciej Komorowski October 9, 2026
2 Simple Membership <= 4.8.3 - Missing Authorization to Unauthenticated Account Takeover and Sensitive Information Disclosure via 'email' Parameter on Activation Endpoints CVE-2026-97337 7.5 Kuba October 2, 2026
3 Simple Membership <= 4.8.2 - Missing Authorization CVE-2026-74000 4.3 Ananda Dhakal September 16, 2026
4 Simple Membership < 4.7.8 - Missing Authorization CVE-2026-88764 4.3 Charles Vosburgh September 11, 2026
5 Simple Membership <= 4.8.1 - Unauthenticated Authentication Bypass to Administrator Account Takeover via Multisite Identity Binding CVE-2026-77194 5.3 Kittipat Jitphonchana August 31, 2026
6 Simple Membership <= 4.7.7 - Missing Authorization CVE-2026-15930 5.3 Brandon Steed July 24, 2026
7 Simple Membership <= 4.7.7 - Unauthenticated Stored Cross-Site Scripting CVE-2026-15931 7.2 Yaswanth Reddy Sunkara July 24, 2026
8 Simple Membership <= 4.7.6 - Unauthenticated Payment Verification Bypass CVE-2026-14936 5.3 Muni Nitish Kumar Yaddala July 13, 2026
9 Simple Membership <= 4.7.5 - Missing Authorization to Unauthenticated Arbitrary Member Account Deactivation via Forged Stripe 'charge.refunded' Webhook CVE-2026-12093 5.3 Nikita Fenko June 17, 2026
10 Simple Membership <= 4.7.4 - Unauthenticated Stored Cross-Site Scripting CVE-2026-11855 7.2 Duy Tran June 15, 2026
View more vulnerabilities in this software package View more vulnerabilities

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