CVE-2026-71262

9.8 CRITICALpublic exploit available

Published 2026-08-05 · Updated 2026-08-10

AI risk analysis

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.
Prioritized remediation: Apply the [Authorize] attribute to the BlobStorageController.cs methods and configure a global authorization FallbackPolicy in Startup.cs.

auth-bypasswebiotstorage

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-306

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.