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 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.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Apply the [Authorize] attribute to the BlobStorageController.cs endpoints or configure a global authorization FallbackPolicy in Startup.cs.

auth-bypasswebstorage

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

References

Data: NVD (public domain). Analysis: local $0 model. Defensive use only.