CVE-2026-11454: CWE-639 Authorization Bypass Through User-Controlled Key in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation
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.
AI Analysis
Technical Summary
CVE-2026-11454 is an insecure direct object reference vulnerability in the Groundhogg WordPress plugin affecting all versions up to and including 4.5.2. The REST API endpoint /wp-json/gh/v4/contacts/<id> performs permission checks only on the role-level view_contacts capability but lacks object-level ownership verification. This allows authenticated users with view_contacts but without view_others_contacts permission to access any contact's full record, including personally identifiable information, contact metadata, owner IDs, admin edit URLs, and linked WordPress user capabilities. The vulnerability arises from the read_single() function returning contact data by sequential integer ID without enforcing ownership restrictions applied elsewhere in the codebase.
Potential Impact
An attacker with authenticated access and the view_contacts capability can read any contact record on the site, including sensitive personal information and administrative details. This could lead to unauthorized disclosure of PII and potentially sensitive user capability information, violating data confidentiality and privacy.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict the assignment of the view_contacts capability to trusted users only and monitor access to the affected REST API endpoint. Avoid granting the Sales Rep role or similar roles with view_contacts capability to untrusted users.
CVE-2026-11454: CWE-639 Authorization Bypass Through User-Controlled Key in trainingbusinesspros Groundhogg — CRM, Newsletters, and Marketing Automation
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.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-11454 is an insecure direct object reference vulnerability in the Groundhogg WordPress plugin affecting all versions up to and including 4.5.2. The REST API endpoint /wp-json/gh/v4/contacts/<id> performs permission checks only on the role-level view_contacts capability but lacks object-level ownership verification. This allows authenticated users with view_contacts but without view_others_contacts permission to access any contact's full record, including personally identifiable information, contact metadata, owner IDs, admin edit URLs, and linked WordPress user capabilities. The vulnerability arises from the read_single() function returning contact data by sequential integer ID without enforcing ownership restrictions applied elsewhere in the codebase.
Potential Impact
An attacker with authenticated access and the view_contacts capability can read any contact record on the site, including sensitive personal information and administrative details. This could lead to unauthorized disclosure of PII and potentially sensitive user capability information, violating data confidentiality and privacy.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict the assignment of the view_contacts capability to trusted users only and monitor access to the affected REST API endpoint. Avoid granting the Sales Rep role or similar roles with view_contacts capability to untrusted users.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-06-06T12:45:02.962Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a72e5c6bf8831d539734ef7
Added to database: 08/05/2026, 07:27:02 UTC
Last enriched: 08/05/2026, 07:58:55 UTC
Last updated: 08/06/2026, 00:41:10 UTC
Views: 5
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