{"id":"CVE-2026-92975","published":"2026-10-10T06:16:44.253","lastModified":"2026-10-13T13:29:12.567","description":"The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 4.8.3 via the `create_support_user()` function. This is due to the function identifying the support account solely by matching against publicly hardcoded constants — `user_login` `'groundhogg'` and email addresses `'support@groundhogg.io'` / `'help@groundhogg.io'` — where the `in_array()` email-equality check at line 238 is not a security boundary because any user fully controls their own email value. This makes it possible for an attacker with an account whose `user_login` is `'groundhogg'` and whose `user_email` matches one of the hardcoded support constants to have that account silently promoted to administrator — and additionally to super admin on multisite when the triggering administrator holds `manage_network_options` — resulting in full site takeover. Exploitation requires a two-actor flow: the attacker must first obtain or pre-plant an account with the hardcoded credentials (possible when open user registration is enabled or another account-creation path exists), after which a legitimate administrator must invoke the support-access feature via the `submit_ticket` or `process_send_support_access` entry points to trigger the promotion.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-269"],"vendors":[],"products":[],"references":[{"url":"https://github.com/groundhoggwp/groundhogg/commit/4b413aa6e","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php#L224","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php#L238","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php#L250","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php#L298","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php#L599","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/c355658a-515a-48ed-a114-6a202e23e34b?source=cve","tags":[]}],"exploitRefs":[{"url":"https://github.com/groundhoggwp/groundhogg/commit/4b413aa6e","tags":[]}],"hasPoc":true,"ai":{"summary":"The Groundhogg WordPress plugin has a privilege escalation vulnerability where any user with login 'groundhogg' and a matching support email can be silently promoted to administrator by a legitimate admin triggering support access. This allows full site takeover with just two actors: a pre-planted account and an admin invoking support features.","exploitability":"Exploitation requires two actors - first, an attacker must create or obtain an account with login 'groundhogg' and one of the hardcoded support emails, then a legitimate administrator must trigger support access via submit_ticket or process_send_support_access endpoints.","blast_radius":"The vulnerability affects all WordPress sites using Groundhogg plugin versions up to 4.8.3, potentially allowing full site takeover with elevated privileges that persist beyond the initial exploitation.","remediation":"Upgrade to version 4.8.4 or later to remediate this privilege escalation vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["privilege-escalation","wordpress","plugin"],"model":"garnet-coder","analyzedAt":"2026-10-17T08:57:43.785Z"}}