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cpe:2.3:a:jstedfast:mailkit:*:*:*:*:*:*:*:*
part: a version: * update: *
| Vendor | Jstedfast (5472a684-98e5-5a7f-84da-2930f9eee41d) |
|---|---|
| Product | Mailkit (634bddbc-3295-53d8-9568-8bce83b7780c) |
| Edition | * |
| Language | * |
| Software edition | * |
| Target software | * |
| Target hardware | * |
| Other | * |
| Notes | Imported from purl2cpe mapping |
PURL mappings
| PURL | Source | Last updated |
|---|---|---|
pkg:github/jstedfast/mailkit |
purl2cpe | 2026-06-01 10:12:18.509968 |
pkg:nuget/mailkit |
purl2cpe | 2026-06-01 10:12:18.509971 |
Vulnerability references
| Identifier | cpeApplicability | Submitted | db.gcve.eu details | Rationale |
|---|---|---|---|---|
CVE:CVE-2026-41319 |
vulnerable | 2026-06-08 08:03:15.220587 |
MailKit has STARTTLS Response Injection via unflushed stream buffer that enables SASL mechanism downgrade
MEDIUM (6.5)
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 boundary, enabling SASL authentication mechanism downgrade (e.g., forcing PLAIN instead of SCRAM-SHA-256). The internal read buffer in `SmtpStream`, `ImapStream`, and `Pop3Stream` is not flushed when the underlying stream is replaced with `SslStream` during STARTTLS upgrade, causing pre-TLS attacker-injected data to be processed as trusted post-TLS responses. Version 4.16.0 patches the issue.
Published: 2026-04-24T03:07:24.335Z
Updated: 2026-04-25T01:46:35.002Z |
Imported from gcve-enriched-dumps CVE data |
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