Vulnerabilities CVE-2026-71262

CVE-2026-71262

Critical

Open

TLP:CLEAR

IoTSharp BlobStorageController Missing Authentication and Path Traversal

NVD CVE.org

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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.

Details

CVSS Score: 9.8
EPSS Score ⓘ: 0.35%

28.1th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: Aug 5, 2026
Last Modified: Aug 10, 2026

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