Download Syncthing 1.15.1

Version 1.15.0 of Syncthing has been released and due to a problem a successor is already available. Syncthing is an open source program that allows files to be synchronized between two computers. This happens just like with Resilio, formerly known as BitTorrent Sync, without a central server in between, as is the case with storage services such as Dropbox, Google Drive, OneDrive and iCloud. The software is available for Windows, Linux, macOS and Android, among others. There are also packages for Synology and Qnap. The following changes and improvements have been made in this release:

Syncthing 1.15.1

This is a patch release to correct the inadvertently changed –config flag.

Bug fixes:

• #7532: Removing pending folders is flaky
• #7549: Flag –config was renamed to –conf in 1.15.0

Syncthing 1.15.0

This release fixes a vulnerability where Syncthing and the relay server can crash due to malformed relay protocol messages (CVE-2021-21404); see GHSA-x462-89pf-6r5h†

This release updates the CLI to use subcommands and adds the subcommands cli (previously standalone stcli utility) and decrypt (for offline verifying and decrypting encrypted folders).

With this release we invite everyone to test the “untrusted (encrypted) devices” feature. You should not use it yet on important production data. Thus UI controls are hidden behind a feature flag. For more information, visit:

Bug fixes:

• #7198: Removing a folder and re-adding it again (untrusted) makes it not sync until restart
• #7385: infinite filesystem recursion due to missing file id
• #7419: panic “Snapshot(): database is closed” on start after wiping database
• #7429: “Ignore Patterns” tab disappears after visiting “Folder Defaults”
• #7434: Non-DNS-like computer name fails creation of HTTPS certificate
• #7451: strelaysrv v1.14.0 failing to load
• #7466: Receive-encrypted fails after a while: file with empty block list
• #7469: .stignore should be ignored in Receive Encrypted folders
• #7474: Device tries to push ignored files to a remote device in a 3-device setup
• #7481: Versioning help strings are not displayed in the GUI
• #7509: Sharing the first folder to an untrusted device on an established connection sends plain-text

Enhancements:

• #6566: Ship stcli in main package
• #7457: Remove sub-second precision from the REST API rest/stats/device.
• #7514: Increase default strelaysrv network buffer size

Other issues:

• #4719: Package stcli as Debian package
• #7199: Build script -no-upgrade handling is unintuitive