Threats Tagged 'cve-2026-41319'
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Threats Tagged 'cve-2026-41319'
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CVE-2026-41319: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in jstedfast MailKitCVE-2026-41319 0 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. Join the discussion | CVE Database V5 | 04/24/2026, 03:07:24 UTC Added: 04/24/2026, 04:06:05 UTC |
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