What’s Vulnerable › Vulnerabilities

CVE-2026-28766: Gardyn Cloud API Missing Authentication for Critical Function

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-03 · updated 2026-07-24
• Weakness: CWE-306

Description

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

Affected products

• Gardyn Cloud API: before 2.12.2026 — fixed in 2.12.2026

How to fix

Upgrade to a fixed version: Gardyn Cloud API 2.12.2026. Check the vendor advisory for mitigations.

References

• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.json
• https://mygardyn.com/security/
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03

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