Simple Membership <= 4.8.1 - Unauthenticated Authentication Bypass to Administrator Account Takeover via Multisite Identity Binding
The Simple Membership plugin for WordPress is vulnerable to Authentication Bypass leading to Administrator Account Takeover in versions up to, and including, 4.8.0. This is due to improper identity verification during the public registration flow in WordPress Multisite environments, where the plugin binds new Simple Membership records to existing global WordPress users based solely on matching username and email, without requiring password verification or ownership proof, and fails to properly detect Administrator roles on child sites. This makes it possible for unauthenticated attackers to take over Administrator accounts on child sites in a Multisite network by registering a Simple Membership account with a victim's credentials on a site where public registration is enabled, then updating the victim's global WordPress password through the profile edit functionality. The vulnerability was partially patched in version 4.8.1.
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | Simple Membership | <= 4.8.1 | 4.8.2 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Schwäche (CWE)
CWE-287- Plattform
- WordPress
- Paket
Simple Membership- Veröffentlicht
- 31.08.2026
- Aktualisiert
- 11.10.2026 10:23
Quellen und Lizenzen
Wordfence Intelligence - ccd3eae5-3d30-4d0d-8f95-5f0747e4e944 - Wordfence Intelligence
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Schwachstellenhistorie: Simple Membership
Alle veröffentlichten Schwachstellen dieses Pakets (WordPress-Plugin), neueste zuerst. Zeigt, ob es ein einmaliger Ausrutscher ist oder ein Paket, das man im Auge behalten muss.
- Einträge insgesamt
- 38
- Erste → letzte
- 07.2016 10.2026
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Kritisch 1
- Hoch 12
- Mittel 25
Veröffentlichungen pro Jahr
- 2017: 1
- 2018: 0
- 2019: 1
- 2020: 0
- 2021: 1
- 2022: 6
- 2023: 5
- 2024: 6
- 2025: 1
- 2026: 15
früher: 2
-
Simple Membership <= 4.8.1 - Unauthenticated Authentication Bypass to Administrator Account Takeover via Multisite Identity Binding dieser Eintrag
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