CVE-2026-111629
Medium
Description
IoTSharp through 3.6.1 contains an insecure direct object reference vulnerability that allows any authenticated user to read other tenants' data because Customers and Devices API handlers do not scope queries to the caller's tenant. Attackers can self-register through the anonymous AccountController.Create endpoint and supply other tenants' GUIDs to read customer contact details, device inventories and device attribute telemetry.
SeverityMedium
CVSS4.3
Exploit probability—
ProductIoTSharp
PublishedOct 16, 2026
First seenOct 16, 2026
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| IoTSharp IoTSharp | v ≤ 3.6.1 | — |
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