MimeKit Known Vulnerabilities & Fixes
MimeKit has 2 known security vulnerabilities in NuGet (.NET). Upgrade to version 4.15.1 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.
Low Immediate Risk
No actively exploited vulnerabilities detected. Monitor and update in your next maintenance window.
Recommended safe version: 4.15.1
Upgrading to 4.15.1 or later resolves all 2 known vulnerabilities in MimeKit. Run: dotnet add package MimeKit --version 4.15.1
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Check if you're affected and upgrade to 4.15.1 to stay secure.
Security Summary
- 2 affected version ranges have been identified across these 2 advisories.
- 100% of known issues have a published fixed version.
- Remediation: dotnet add package MimeKit
Vulnerabilities
2 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details. First disclosed Jul 11, 2024, most recently Mar 5, 2026 (602 days apart).
| CVE / GHSA | Severity | Affected | Fixed In |
|---|---|---|---|
| GHSA-gmc6-fwg3-75m5 Mimekit has vulnerable dependency that can lead to denial of service | HIGH | 3.0.0, 3.1.0, 3.1.1, 3.2.0 (+16 more) | 4.7.1 |
| CVE-2026-30227 MimeKit has CRLF Injection in Quoted Local-Part that Enables SMTP Command Injection and Email Forgery | MEDIUM | 0.10.0, 0.10.1, 0.11.0, 0.12.0 (+189 more) | 4.15.1 |
About This Data
Vulnerability data for MimeKit is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.
CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Related NuGet (.NET) Packages
Other packages in this ecosystem, ranked by shared vulnerabilities where available.
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