CVE-2026-97644High· 8.8▾ TwilightThe 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_…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 3.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
Last analysed / modified upstream
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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