CVE-2026-41319Published

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

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-41319

Published

MailKit

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "jstedfast",
                    "product": "MailKit",
                    "versions": [
                        {
                            "version": "< 4.16.0",
                            "status": "affected"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON