GCVE-110-OSM-2026-4951

Advisory PublishedCVSS 9.6/10

Vulnetix · Advisory published May 5, 2026

Clean-facade GitHub source repository backing the trojanized Sicoob.Sdk NuGet package. The repo's SicoobClient.cs source is benign while the published DLL is malicious - a deliberate source-to-package mismatch to evade source review. Part of the Sicoob.Sdk NuGet supply-chain campaign that exfiltrates banking mTLS certificates and PFX passwords via Sentry DSN: https://d565e3f03d0b1a7c8935d7ff94237316@o4511335034847232.ingest.de.sentry.io/4511337546317904

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Weaknesses (CWE)

CWE-506Embedded Malicious Code

Risk Scores

CVSS 3.1

9.6/10

Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected Products

Vendor	Product	Versions	Platforms
unknown		all (affected)	—

References

Malicious package:

advisory

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