C1.Winform (NuGet) · Malicious Code
Affects C1.WinformSource GCVE Database
Malicious package : remove C1.Winform 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-2024-4429
What to do
Remove C1.Winform 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.Winformpkg:nuget/C1.WinformOther threats | Affected
| Fixed in– |
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Description
The NuGet package C1.Winform version 6.0.20232.611 has been identified as containing malicious code. This is a supply chain threat where the package itself is malicious, potentially impacting any software projects that incorporate this specific version. No official patch or remediation guidance is currently provided.