CVE-2026-28766

Gardyn Cloud API Missing Authentication for Critical Function

Published Apr 3, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
Description
A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.

Remediation

Vendor Solution

Gardyn states that the relevant fixes are included in the latest version of the Gardyn mobile application. Users are required to run a supported version of the Gardyn App on their phone in order to access Gardyn services and devices. The current versions of the Gardyn App and the Gardyn Home firmware can be checked in the Gardyn App. For all vulnerabilities, Gardyn recommends users ensure their home kit and studio devices are upgraded to firmware master.622 or later. Gardyn also recommends that users update their mobile application to the most recent version. Gardyn requests that users ensure their devices have network connectivity in order to automatically download needed firmware updates. Unconnected devices will automatically update when configured with a working Internet connection.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mygardyn
Mygardyn cloud Api
CPEs cpe:2.3:a:mygardyn:cloud_api:*:*:*:*:*:*:*:*
Vendors & Products Mygardyn
Mygardyn cloud Api
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Gardyn
Gardyn cloud Api
Vendors & Products Gardyn
Gardyn cloud Api
Type Values Removed Values Added
Description A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.
Title Gardyn Cloud API Missing Authentication for Critical Function
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N'}

cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Apr 7, 2026, 2:22 PM
Reserved
Mar 17, 2026, 8:12 PM
Status
Analyzed
Published
Apr 3, 2026, 9:17 PM
Modified
Jul 24, 2026, 10:10 PM