VulnerabilityAnalyzed
CVE-2026-28766
A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.
CRITICAL 9.2EPSS 0.44%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.44%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A specific endpoint exposes all user account information for registered Gardyn users without requiring authentication.
- CVSS 4.0
- 9.2 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.44% probability · 37th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-306
- Affected
- mygardyn/cloud api
- Source
- ics-cert@hq.dhs.gov
References
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-055-03.jsonThird Party Advisory
- https://mygardyn.com/security/Vendor Advisory
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-055-03Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.