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VulnerabilityPublished Updated

Fluentmail.Smtp (NuGet) · Malicious Code

Affects Fluentmail.SmtpSource GCVE Database

0
Severity
High

Rated by Threat Radar

Data as of 20 Jul 2026, 20:36 UTC

What to do

Affected software

ProductAffectedFixed in
NuGetFluentmail.Smtppkg:nuget/Fluentmail.SmtpOther threatsAffected
  • =1.0.48
  • =1.0.23
  • =1.0.17
  • =1.0.43
  • =1.0.25
  • =1.0.37
  • =1.0.29
  • =1.0.3
  • =1.0.53
  • =1.0.33
  • =1.0.38
  • =1.0.30
  • =1.0.34
  • =1.0.54
  • =1.0.15
  • =1.0.60
  • =1.0.47
  • =1.0.24
  • =4.5.78
  • =1.0.20
  • =1.0.5
  • =1.0.44
  • =1.0.2
  • =1.0.16
  • =1.0.45
  • =1.0.50
  • =1.0.56
  • =1.0.61
  • =1.0.18
  • =1.0.8
  • =1.0.59
  • =1.0.22
  • =1.0.28
  • =1.0.55
  • =1.0.27
  • =1.0.35
  • =1.0.51
  • =1.0.12
  • =1.0.21
  • =1.0.40
  • =1.0.36
  • =1.0.46
  • =1.0.58
  • =1.0.10
  • =1.0.26
  • =1.0.42
  • =1.0.19
  • =1.0.32
  • =1.0.52
  • =1.0.7
  • =1.0.41
  • =1.0.57
  • =1.0.49
  • =1.0.31
  • =1.0.39
  • =1.0.4
  • =1.0.6
  • =1.0.9
  • =1.0.11
  • =1.0.13
  • =1.0.14
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should immediately cease use of the affected versions and replace them with versions from a trusted source or alternative packages. Verify package integrity and provenance before use. Monitor vendor or repository advisories for updates or fixes.

Description

The Fluentmail.Smtp NuGet package contains malicious code in multiple specific versions. This is a supply chain threat where the package itself is compromised to include harmful functionality. No CVSS score or detailed technical exploitation information is provided.

References

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