---
id: CVE-2026-28766
title: >-
  A specific endpoint exposes all user account information for registered Gardyn
  users without requiring authentication.
summary: >-
  A specific endpoint exposes all user account information for registered Gardyn
  users without requiring authentication.
severity: critical
cvss: 9.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N'
cwe:
  - CWE-306
vendor: mygardyn
product: cloud_api
affected:
  - cloud_api < 2.12.2026
patched:
  - cloud_api 2.12.2026
published: '2026-04-03'
updated: '2026-07-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-28766'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://mygardyn.com/security/'
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
  - exploit-available
epss: 0.00604
epssPercentile: 0.46646
ingestedAt: '2026-07-25T22:05:04.854Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/MichaelAdamGroberman/CVE-2026-28766'
  checkedAt: '2026-09-26T09:05:41.375Z'
exploitAvailable: true
---

## Overview

A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.

## Affected

- `cloud_api < 2.12.2026`

## Remediation

Upgrade past the affected range:

- `cloud_api 2.12.2026`