Malicious Package Affecting otpcsharp package, versions [1.0.14][1.0.127][1.0.199][1.0.162][1.0.1][1.0.39][1.0.31][1.0.49][1.0.57][1.0.67][1.0.80][1.0.112][1.0.52][1.0.42][1.0.10][1.0.149][1.0.58][1.0.133][1.0.36][1.0.21][1.0.51][1.0.173][1.0.185][1.0.55][1.0.70][1.0.182][1.0.74][1.0.75][1.0.198][1.0.120][1.0.184][1.0.111][1.0.157][1.0.50][1.0.178][1.0.126][1.0.20][1.0.189][1.0.180][1.0.150][1.0.129][1.0.15][1.0.105][1.0.147][1.0.172][1.0.83][1.0.29][1.0.155][1.0.192][1.0.43][1.0.77][2.1.0][1.0.188][2.1.1][1.0.13][1.0.194][1.0.132][1.0.86][1.0.103][1.0.154][1.0.9][1.0.79][1.0.166][1.0.114][1.0.146][1.0.116][1.0.138][1.0.121][1.0.91][1.0.110][1.0.100][1.0.196][1.0.152][1.0.181][1.0.171][1.0.35][1.0.125][1.0.27][1.0.78][1.0.28][1.0.22][1.0.119][1.0.200][1.0.62][1.0.94][1.0.135][1.0.130][1.0.2][1.0.65][1.0.44][1.0.122][1.0.87][1.0.60][1.0.34][1.0.160][1.0.33][1.0.167][1.0.3][1.0.23][1.0.176]
Threat Intelligence
Exploit Maturity
Snyk has reported that there have been attempts or successful attacks targeting this vulnerability.
Attacked
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Test your applications- Snyk IDSNYK-DOTNET-OTPCSHARP-18138130
- published22 Jul 2026
- disclosed20 Jul 2026
- creditUnknown
Introduced: 20 Jul 2026
New Malicious CVE NOT AVAILABLE CWE-506 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Avoid using all malicious instances of the OtpCsharp package.
Overview
OtpCsharp is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and this package authorship.