CVE-2026-71262

criticalCVSS 9.8covered by 1 sourcefirst seen 2026-08-05

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.

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Exploitation outlook

Low exploitation risk0.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.

Advisory coverage (1)

criticalCVE-2026-71262: IoTSharp BlobStorageController.cs lacks the [Authorize] attribute applied to every other contr…nvd · 2026-08-05

External references

NVD record for CVE-2026-71262

CVE.org record

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