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Vendor

jstedfast

2 known vulnerabilities.

jstedfast at a glance

Last 12 months
2
Critical · all time
0
Exploited · all time
0
Public exploit · all time
0
New vulnerabilities per month · last 12 months
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Products

MimeKit 1 MailKit 1
All Critical High Medium Low Exploited only Public exploit

2 results · Feed

  • Medium 6.5
    CVE-2026-41319

    MailKit has STARTTLS Response Injection via unflushed stream buffer that enables SASL mechanism downgrade

    MailKit is a cross-platform mail client library built on top of MimeKit. A STARTTLS Response Injection vulnerability in versions prior to 4.16.0 allows a Man-in-the-Middle attacker to inject arbitrary protocol responses across the plaintext-to-TLS trust bound…

    jstedfast MailKit MailKit NuGet
  • Medium 6.9
    CVE-2026-30227

    MimeKit: CRLF Injection in Quoted Local-Part Enables SMTP Command Injection and Email Forgery

    MimeKit is a C# library which may be used for the creation and parsing of messages using the Multipurpose Internet Mail Extension (MIME), as defined by numerous IETF specifications. Prior to version 4.15.1, a CRLF injection vulnerability in MimeKit allows an …

    jstedfast MimeKit MimeKit NuGet