{"id":"CVE-2026-97644","published":"2026-10-03T04:18:04.917","lastModified":"2026-10-06T15:04:52.637","description":"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.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v3/contacts-api.php#L373","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/api/v4/emails-api.php#L571","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/db/contacts.php#L205","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/main-roles.php#L532","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/replacements.php#L2280","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.3/includes/rewrites.php#L460","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset/3724910/groundhogg/trunk/api/v3/contacts-api.php","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&new=3724910%40groundhogg%2Ftags%2F4.9.1&old=3724058%40groundhogg%2Ftags%2F4.9","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/557306b7-7b66-465e-8d4d-ebae5b1577c9?source=cve","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The Groundhogg plugin for WordPress allows attackers with Sales Representative-level access to escalate privileges by reassigning contact records to an Administrator's user ID, then using an email test feature to gain full admin access.","exploitability":"Exploitation requires an attacker to have Sales Representative-level access and involves reassigning a contact record and using an email test feature, making it moderately difficult.","blast_radius":"If exploited, this vulnerability could result in full administrative control over the WordPress instance, potentially leading to data theft, system compromise, and broader network security issues.","remediation":"Upgrade to Groundhogg version 5.0.0 or later.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","web","privilege-escalation"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-03T08:54:52.869Z"}}