PT-2026-30231 · Gardyn · Gardyn

Michael Groberman · Published 2026-04-03 · Updated 2026-04-28 · CVE-2026-28766

Positive Technologies (AI Summary)

CVSS v3.1

9.3

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Gardyn (affected versions not specified)

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

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-28766

Affected Products

Gardyn

References · 7

• https://mygardyn.com/security · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28766 · Security Note
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.json · Note
• https://cisa.gov/news-events/ics-advisories/icsa-26-055-03 · Note
• https://reddit.com/r/Gardyn/comments/1sy9r9j/psa_federal_cisa_security_advisory_about_gardyn · Reddit Post
• https://twitter.com/CveFindCom/status/2040183401680892243 · Twitter Post
• https://twitter.com/TheHackerWire/status/2040293430388306141 · Twitter Post