CVE-2026-28766 — CRITICAL (9.3)

Q: What is CVE-2026-28766?

CVE-2026-28766 is a vulnerability with a CVSS score of 9.3 (CRITICAL). A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.

Q: How severe is CVE-2026-28766?

CVE-2026-28766 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-28766?

Check the references section above for vendor advisories and patch information. Affected products include: Mygardyn Cloud Api.

Vulnerability Description

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

CVSS Score

9.3

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Mygardyn	Cloud Api	< 2.12.2026

Related Weaknesses (CWE)

CWE-306

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-05Third Party Advisory
https://mygardyn.com/security/Vendor Advisory
https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03US Government ResourceThird Party Advisory

FAQ

What is CVE-2026-28766?

CVE-2026-28766 is a vulnerability with a CVSS score of 9.3 (CRITICAL). A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.

How severe is CVE-2026-28766?

CVE-2026-28766 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-28766?

Check the references section above for vendor advisories and patch information. Affected products include: Mygardyn Cloud Api.