C1.WinForms.Net (NuGet) · Malicious Code
Affects C1.WinForms.NetSource GCVE Database
Malicious package : remove C1.WinForms.Net and rotate any secrets on hosts that installed it.
Data as of 20 Jul 2026, 20:41 UTC
Malicious package
Published to NuGet · OSV MAL-2024-4431
What to do
Remove C1.WinForms.Net from every project, lockfile and image that pulls it in. Treat any host that installed it as compromised: rotate the credentials, tokens and keys it could read, from a clean machine.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
NuGetC1.WinForms.Netpkg:nuget/C1.WinForms.NetOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
The NuGet package C1.WinForms.Net version 6.0.20232.611 has been identified as containing malicious code. This is a supply chain threat involving a malicious package distributed via the NuGet ecosystem. No CVSS score or detailed technical exploitation data is available. There is no information about known exploits in the wild or vendor-provided patches.