Groundhogg <= 4.8.3 - Unauthenticated Privilege Escalation to Support User Identity Confusion
Summary
| CVE | CVE-2026-92975 |
|---|---|
| State | PUBLISHED |
| Assigner | Wordfence |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-10 06:16:44 UTC |
| Updated | 2026-10-13 13:29:12 UTC |
| 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 `'[email protected]'` / `'[email protected]'` — 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. |
Risk And Classification
Primary CVSS: v3.1 8.1 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.003520000 probability, percentile 0.269080000 (date 2026-10-12)
Problem Types: CWE-269 | CWE-269 CWE-269 Improper Privilege Management
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.1 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | DECLARED | 8.1 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Trainingbusinesspros | Groundhogg CRM Newsletters And Marketing Automation | affected 4.8.3 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php | [email protected] | plugins.trac.wordpress.org | |
| www.wordfence.com/threat-intel/vulnerabilities/id/c355658a-515a-48ed-a114-6a202... | [email protected] | www.wordfence.com | |
| plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php | [email protected] | plugins.trac.wordpress.org | |
| plugins.trac.wordpress.org/browser/groundhogg/tags/4.8.1/admin/help/help-page.php | [email protected] | plugins.trac.wordpress.org | |
| github.com/groundhoggwp/groundhogg/commit/4b413aa6e | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Wordfence PRISM (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-09-17T13:44:21.000Z | Vendor Notified |
| CNA | 2026-10-09T17:14:41.000Z | Disclosed |
There are currently no legacy QID mappings associated with this CVE.