CVE-2026-11454
Groundhogg — CRM, Newsletters, and Marketing Automation <= 4.5.2 - Insecure Direct Object Reference
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.
INFO
Published Date :
Aug. 5, 2026, 8:16 a.m.
Last Modified :
Aug. 5, 2026, 8:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-11454
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE |
Solution
- Update the Groundhogg plugin to the latest version.
- Ensure object-level ownership checks are enforced.
- Review user roles and permissions for contact access.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-11454.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-11454 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-11454
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-11454 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-11454 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 05, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'trainingbusinesspros', 'product': 'Groundhogg — CRM, Newsletters, and Marketing Automation', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '4.5.2'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-639 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/api/v4/base-object-api.php#L124 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/api/v4/contacts-api.php#L426 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/api/v4/contacts-api.php#L946 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/includes/main-roles.php#L163 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/includes/main-roles.php#L374 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.2/includes/main-roles.php#L43 Added Reference https://plugins.trac.wordpress.org/browser/groundhogg/tags/4.5.3/api/v4/contacts-api.php#L437 Added Reference https://plugins.trac.wordpress.org/changeset?new=3569222%40groundhogg%2Ftags%2F4.5.3&old=3562726%40groundhogg%2Ftags%2F4.5.2 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/7fe3d251-4edf-4d94-a946-0aa918135784?source=cve