CVE-2026-11454Network attack vector

Contact-record disclosure via missing object authorization

Published Aug 5, 2026 · Updated Aug 5, 2026

IDOR in Groundhogg 4.5.2 and earlier allows remote authenticated users to read arbitrary CRM contact records through its REST API. The GET /wp-json/gh/v4/contacts/ handler checks only view_contacts, then read_single() fetches the full record by sequential ID without the object-level view_contact ownership check used elsewhere. A user with view_contacts but not view_others_contacts, including the built-in Sales Rep role, can disclose other contacts’ PII, metadata, owner IDs, edit URLs, and linked WordPress capability sets.

CVSS severity6.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

IDOR in Groundhogg 4.5.2 and earlier allows remote authenticated users to read arbitrary CRM contact records through its REST API. The GET /wp-json/gh/v4/contacts/ handler checks only view_contacts, then read_single() fetches the full record by sequential ID without the object-level view_contact ownership check used elsewhere. A user with view_contacts but not view_others_contacts, including the built-in Sales Rep role, can disclose other contacts’ PII, metadata, owner IDs, edit URLs, and linked WordPress capability sets.

The record

CVE
CVE-2026-11454
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Groundhogg Inc.
Product
Groundhogg
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Groundhogg Inc. · Groundhoggversion=0 <=4.5.2

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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