Groundhogg — CRM, Newsletters, and Marketing Automation <= 4.5.2 - Insecure Direct Object Reference
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| trainingbusinesspros | Groundhogg — CRM, Newsletters, and Marketing Automation | up to 4.5.2 | — | No fix listed | CNA |
- Groundhogg — CRM, Newsletters, and Marketing Automation Vendortrainingbusinesspros Affected up to 4.5.2 Fixed in — No fix listed CNA
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:groundhogg:groundhogg:*:*:*:*:*:*:*:* | — | — | trainingbusinesspros |
- cpe:2.3:a:groundhogg:groundhogg:*:*:*:*:*:*:*:* Versions — — ·trainingbusinesspros
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-11454
- 2026-10-03 Alias added: GHSA-52xv-wqqv-x9g6
References
Other 9
- https://www.wordfence.com/threat-intel/vulnerabilities/id/7fe3d251-4edf-4d94-a946-0aa918135784?source=cve
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/api/v4/contacts-api.php#L426
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/api/v4/contacts-api.php#L946
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/api/v4/base-object-api.php#L124
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/includes/main-roles.php#L163
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/includes/main-roles.php#L374
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/includes/main-roles.php#L43
- https://plugins.trac.wordpress.org/changeset?new=3569222%40groundhogg%2Ftags%2F4.5.3&old=3562726%40groundhogg%2Ftags%2F4.5.2
- https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.3/api/v4/contacts-api.php#L437
More trainingbusinesspros vulnerabilities
- TI-2023-01346 Groundhogg Contacts < 2.7.9.4 - Admin+ SQLi CVSS 3.1HIGH 7.2
- TI-2023-01986 HollerBox < 2.1.4 - Admin+ SQL Injection CVSS 3.1MEDIUM 4.9
- TI-2019-11742 The groundhogg plugin before 1.3.5 for WordPress has… CVSS 3.0HIGH 8.8
- TI-2025-00313 Groundhogg <= 3.7.3.5 - Authenticated (Author+) Arbitrary File Upload via gh_big_file_upload Function CVSS 3.1HIGH 8.8
- TI-2026-67410 Improper privilege management in trainingbusinesspros Groundhogg — CRM, Newsletters, and… CVSS 3.1HIGH 8.8
- TI-2023-17022 WordPress Groundhogg Plugin <= 2.7.11 is vulnerable to Cross Site Request Forgery (CSRF) CVSS 3.1HIGH 8.8
Sources
- CVE-2026-11454 · CVE Program
- CVE-2026-11454 · NVD
- FIRST EPSS
- GHSA-52xv-wqqv-x9g6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences