CVE-2026-92975 Groundhogg <= 4.8.3 - Unauthenticated Privilege Escalation to Support User Identity Confusion
Attackers can escalate privileges to administrator by exploiting hardcoded support user checks, requiring open registration and admin interaction.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-92975?
CVE-2026-92975 is a high-severity vulnerability in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation, published on 10 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-269
Which versions are affected by CVE-2026-92975?
How do I fix CVE-2026-92975?
No fix has been published for CVE-2026-92975 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-92975 being exploited?
There is no known exploitation of CVE-2026-92975 in the wild and no public exploit code.
Sources
Also known as GHSA-7cvm-g94w-xfg7.