2026.0.0

Highlights

• Add overloads of DownloadFileAsync and UploadFileAsync taking an IProgress argument (#1771)
• Significantly reduced memory allocations in all scenarios. For SFTP:

Operation	File size	Version	Allocated
SFTP Download	1MB	2025.1.0	3.2MB
SFTP Download	1MB	2026.0.0	0.1MB
SFTP Download	8MB	2025.1.0	24.8MB
SFTP Download	8MB	2026.0.0	0.7MB
SFTP Download	64MB	2025.1.0	197.8MB
SFTP Download	64MB	2026.0.0	4.8MB
SFTP Upload	1MB	2025.1.0	4.1MB
SFTP Upload	1MB	2026.0.0	0.0MB
SFTP Upload	8MB	2025.1.0	32.5MB
SFTP Upload	8MB	2026.0.0	0.3MB
SFTP Upload	64MB	2025.1.0	259.5MB
SFTP Upload	64MB	2026.0.0	1.9MB

Breaking changes

• None known

What's Changed

• Set version to 2025.1.1-prerelease.{height} by @Rob-Hague in #1723
• Bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #1727
• Bump actions/download-artifact from 5 to 6 by @dependabot[bot] in #1726
• Use native AesGcm for .NET Framework from nuget by @scott-xu in #1619
• Update to MSTest 4 by @mus65 in #1721
• Add .NET 10 target and make use of C#14 extension members by @mus65 in #1672
• Enable nullable in ConnectionInfo by @Rob-Hague in #1728
• Truncate local file in ScpClient.Download by @Rob-Hague in #1729
• Rent buffers used in SFTP reads by @Rob-Hague in #1738
• Write into the underlying buffer in SshDataStream by @Rob-Hague in #1739
• Add a socket receive buffer by @Rob-Hague in #1733
• Migrate solution to slnx format by @mus65 in #1749
• Bump actions/checkout from 5 to 6 by @dependabot[bot] in #1744
• Add UploadFileAsync override with canOverride by @mus65 in #1750
• Bump the dependencies group with 6 updates by @dependabot[bot] in #1743
• Bump alpine from 3.22 to 3.23 in /test/Renci.SshNet.IntegrationTests by @dependabot[bot] in #1755
• Bump actions/download-artifact from 6 to 7 by @dependabot[bot] in #1756
• Bump actions/upload-artifact from 5 to 6 by @dependabot[bot] in #1757
• Add a plaintext receive buffer by @Rob-Hague in #1752
• Replace custom TestMethodForPlatformAttribute with MSTest OSCondition by @Rob-Hague with @Copilot in #1766
• Bump the dependencies group with 6 updates by @dependabot[bot] in #1761
• Add GitHub Copilot instructions for SSH.NET by @WojciechNagorski with @Copilot in #1767
• fix Build with newer .NET 10 SDKs by @mus65 in #1772
• SftpClient: add IProgress to DownloadFileAsync and UploadFileAsync by @mus65 in #1771
• ScpClient: allow disabling the -d flag by @mus65 in #1751
• Harden actions by @Rob-Hague in #1784
• Add SECURITY.md by @Rob-Hague in #1785
• Encrypt packets in-place by @Rob-Hague in #1787
• Remove plaintext receive buffer by @Rob-Hague in #1788
• Serialise packets into a buffer by @Rob-Hague in #1792
• Bump alpine from 3.23 to 3.24 in /test/Renci.SshNet.IntegrationTests by @dependabot[bot] in #1806
• Bump actions/setup-dotnet from 5.2.0 to 5.3.0 by @dependabot[bot] in #1802
• Bump NuGet/login from 1.1.0 to 1.2.0 by @dependabot[bot] in #1790
• Bump actions/upload-pages-artifact from 4.0.0 to 5.0.0 by @dependabot[bot] in #1789
• Bump actions/checkout from 6.0.2 to 7.0.0 by @dependabot[bot] in #1807
• Bump the dependencies group with 11 updates by @dependabot[bot] in #1808
• Replace Assert.IsTrue with CollectionAssert.AreEqual for collection comparisons by @Rob-Hague with @Copilot in #1730
• Use the read buffer in UploadFile for the SFTP write packets by @Rob-Hague in #1798
• Keep APM and sync UploadFile/DownloadFile callbacks on the threadpool by @Rob-Hague in #1805
• Bump testcontainers to 4.13 by @Rob-Hague in #1809
• docs: add missing SftpPathNotFoundException exception documentation for ListDirectory, ListDirectoryAsync by @cmgchess in #1810
• Fix infinite loop in Channel.SendData when RemotePacketSize=0 by @Rob-Hague in 6ee878f (GHSA-vhpg-4g9v-rppq)
• Cap data received during the protocol version exchange by @Rob-Hague in 11e7a52 (GHSA-h5q6-2gr6-3g3m)
• Require an explicit IRemotePathTransformation for ScpClient by @Rob-Hague in c66b9f8 (GHSA-mggc-4xg6-vcxf)
• Reject unsafe server-supplied names in SCP recursive download by @Nadav0077 in 600be0d (GHSA-q939-rpr3-3284)
• Bump the dependencies group with 8 updates by @dependabot[bot] in #1818

New Contributors

• @cmgchess made their first contribution in #1810
• @Nadav0077 made their first contribution in 600be0d

Full Changelog: 2025.1.0...2026.0.0