v1.13.16

SagerNet/sing-boxv1.13.16Aug 3, 2026by github-actions[bot]

AI Summary

A security and privacy update regarding AnyTLS metadata handling.

Key Highlights

Removed client metadata from AnyTLS requests by default to prevent profiling.
General bug fixes and improvements.

New Features

Customizable AnyTLS client metadata (now empty by default).

Full Release Notes

## :memo: Release Notes

* Remove client metadata from AnyTLS requests by default **1**
* Fixes and improvements

**1**:

We found that the AnyTLS client implementation uploads metadata that is **not used by the open-source server**, and there are reports of vendors using it to profile and discriminate against users. We now leave it empty by default and allow you to customize it, see [AnyTLS client metadata](https://sing-box.sagernet.org/manual/misc/anytls-client-metadata/).