{"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 manipulate storage endpoints, leading to potential data breaches and unauthorized access.","exploitability":"Exploitation is relatively straightforward as no authentication is required, and the endpoints are publicly accessible.","blast_radius":"If exploited, this could result in significant data loss or corruption, impacting the integrity and confidentiality of the IoTSharp system.","remediation":"Apply the [Authorize] attribute to the BlobStorageController.cs endpoints or configure a global authorization FallbackPolicy in Startup.cs.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["auth-bypass","web","storage"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-09-28T09:00:14.307Z"}}