Groundhogg <= 4.9 - Authenticated (Sales Person+) Privilege Escalation via Contact Identity Rebinding leading to Administrator Account Takeover to 'user_id' Parameter (v3 /contacts) chained with v4 /emails/test
The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Privilege Escalation via Contact Identity Rebinding in all versions up to, and including, 4.9 The vulnerability exists because the create_contact function in the v3 REST endpoint (POST /gh/v3/contacts) is gated solely by the add_contacts capability and forwards the full request payload — including the security-bearing user_id column — into the upsert path of Contacts_DB::add(), which bypasses the ownership guard that Contacts_DB::update() enforces, allowing an attacker to rebind any existing contact record to an arbitrary WordPress user ID. This makes it possible for authenticated attackers with Sales Representative-level access and above to upsert their own contact row to point to an Administrator's user ID, then invoke the v4 email-test endpoint (POST /gh/v4/emails/test) — also accessible to the Sales Representative role via the send_emails capability — to generate an {auto_login_url} one-time permissions key bound to the rebound contact, and consume that link to call wp_set_auth_cookie() and gain a fully authenticated session as the WordPress Administrator.
Betroffene Software
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| Plattform | Paket | Anfällige Versionen | Behoben in |
|---|---|---|---|
| WordPress-Plugin | Groundhogg — CRM, Newsletters, and Marketing Automation | <= 4.9 | 4.9.1 |
Verweise
- CVSS-Vektor
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Schwäche (CWE)
CWE-269- Plattform
- WordPress
- Paket
Groundhogg — CRM, Newsletters, and Marketing Automation- Veröffentlicht
- 02.10.2026
- Aktualisiert
- 11.10.2026 10:22
Quellen und Lizenzen
Wordfence Intelligence - 557306b7-7b66-465e-8d4d-ebae5b1577c9 - Wordfence Intelligence
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Copyright 2012-2026 Defiant Inc.
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Schwachstellenhistorie: Groundhogg — CRM, Newsletters, and Marketing Automation
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
- 41
- Erste → letzte
- 04.2019 10.2026
- Ohne Fix
- 0
- In Angriffen ausgenutzt
- 0
Verteilung nach Schweregrad
- Hoch 15
- Mittel 26
Veröffentlichungen pro Jahr
- 2019: 3
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 10
- 2024: 2
- 2025: 8
- 2026: 18
-
Groundhogg <= 4.9 - Authenticated (Sales Person+) Privilege Escalation via Contact Identity Rebinding leading to Administrator Account Takeover to 'user_id' Parameter (v3 /contacts) chained with v4 /emails/test dieser Eintrag
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