CVE-2026-71262

CRITICAL

IoTSharp BlobStorageController Missing Authentication and Path Traversal

Title source: cna
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 9.8
EPSS 0.0035
EPSS Percentile 27.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-306
Status published
Products (1)
IoTSharp/IoTSharp
Published Aug 05, 2026
Tracked Since Aug 05, 2026