CVE-2026-11454 Groundhogg — CRM, Newsletters, and Marketing Automation <= 4.5.2 - Insecure Direct Object Reference
Authenticated attackers with limited roles can read any contact record, including PII and user capabilities, due to missing object-level authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11454?
CVE-2026-11454 is a medium-severity missing authorization vulnerability in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Groundhogg — CRM, Newsletters, and Marketing Automation plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 4.5.2 via the GET /wp-json/gh/v4/contacts/<id> REST endpoint. The endpoint's permission callback checks only the role-level view_contacts capability and read_single() returns the full contact record by sequential integer ID without the object-level view_contact ownership check applied elsewhere in the codebase. This makes it possible for authenticated attackers holding view_contacts but not view_others_contacts — notably Groundhogg's built-in Sales Rep role, designed to see only its own contacts — to read any contact record on the site, including PII, contact meta, owner IDs, the admin edit URL, and (for contacts linked to a WordPress user) that user's full capability set.
Weakness: CWE-639
Which versions are affected by CVE-2026-11454?
How do I fix CVE-2026-11454?
No fix has been published for CVE-2026-11454 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-11454 being exploited?
There is no known exploitation of CVE-2026-11454 in the wild and no public exploit code.
Sources
Also known as GHSA-52xv-wqqv-x9g6.