IoTSharp up to 3.6.1 Customers/Devices API Handlers AccountController.Create GUID resource injection

Summaryinfo

A vulnerability categorized as problematic has been discovered in IoTSharp up to 3.6.1. The affected element is the function AccountController.Create of the component Customers/Devices API Handlers. Such manipulation of the argument GUID leads to resource injection. This vulnerability is traded as CVE-2026-111629. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in IoTSharp up to 3.6.1 and classified as problematic. Affected by this issue is the function AccountController.Create of the component Customers/Devices API Handlers. The manipulation of the argument GUID with an unknown input leads to a resource injection vulnerability. Using CWE to declare the problem leads to CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. Impacted is confidentiality. CVE summarizes:

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.

The advisory is available at hackmd.io. This vulnerability is handled as CVE-2026-111629 since 10/16/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• IoTSharp

Version

• 3.6.0
• 3.6.1

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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