CVE-2026-28766
A Gardyn cloud API endpoint leaks all user account information without requiring authentication. This means anyone who can reach the endpoint can see details about all registered users. The flaw is serious because it exposes sensitive data.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
mygardyn cloud_api, used by Gardyn customers to manage their smart garden devices.
Real-world impact
An attacker could read personal information, account details, and potentially use that data for phishing or identity theft. The lack of authentication means the data is freely accessible to anyone who discovers the endpoint.
Why this severity
The CVSS score of 9.2 reflects that the vulnerability has high confidentiality impact (all user data exposed), low attack complexity, no authentication or user interaction required, and no mitigations are in place. The score indicates a critical risk.
What to do about it
- ›Disable or restrict the vulnerable endpoint so that only authenticated users can access it.
- ›Monitor network traffic for unauthorized access to the endpoint.
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources.
Timeline
- Apr 3, 2026 · Apr 3, 2026PublishedDisclosed and added to the National Vulnerability Database.
- Jul 24, 2026 · 11d agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- github.com/cisagov/CSAF/blob/develop/c…third party advisory
- mygardyn.com/security/vendor advisory
- cisa.gov/news-events/ics-advisories/…third party advisoryus government resource