{"id":"CVE-2026-71262","published":"2026-08-05T13:24:50.357","lastModified":"2026-08-10T12:17:28.607","description":"IoTSharp BlobStorageController.cs lacks the [Authorize] attribute applied to every other controller in the application (DevicesController, CustomersController, TenantsController, etc.), and no global authorization FallbackPolicy is configured in Startup.cs, leaving its Upload/Download/List/Modify/Delete endpoints reachable by unauthenticated remote attackers.","cvssScore":9.8,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwes":["CWE-306"],"vendors":[],"products":[],"references":[{"url":"https://github.com/IoTSharp/IoTSharp","tags":[]},{"url":"https://github.com/IoTSharp/IoTSharp/blob/master/IoTSharp/Controllers/BlobStorageController.cs","tags":[]}],"exploitRefs":[{"url":"https://github.com/IoTSharp/IoTSharp","tags":[]},{"url":"https://github.com/IoTSharp/IoTSharp/blob/master/IoTSharp/Controllers/BlobStorageController.cs","tags":[]}],"hasPoc":true,"ai":{"summary":"The IoTSharp BlobStorageController.cs lacks proper authorization, allowing unauthenticated attackers to access sensitive storage operations such as upload, download, list, modify, and delete.","exploitability":"Exploitation is relatively easy due to the lack of authentication checks; attackers need only send requests to the exposed endpoints.","blast_radius":"If exploited, this flaw could lead to data breaches, unauthorized modifications, or deletion of critical IoT device storage contents, impacting system integrity and confidentiality.","remediation":"Apply the [Authorize] attribute to the BlobStorageController.cs methods and configure a global authorization FallbackPolicy in Startup.cs.","tags":["auth-bypass","web","iot","storage"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:43:35.221Z"}}