Mumble 1.5.939

Posted on October 9, 2026 by Hartmnt

Today we release the fifth patch release in the Mumble 1.5.x series. This patch contains a few important bug fixes. Especially server administrators should update to this patch level.

You can download the new version from our Downloads page or the GitHub release page or from within your Windows client or software package management system.

We are unable to provide macOS binaries. See the previous blog post for more information.

Changelog

This is the full list of changes since Mumble version 1.5.915.

Client

  • Fixed: Rare library loading issue (#7324)
  • Fixed: Skip UDP ping when TCP mode is forced (#7302)

Server

  • Fixed: Disallow data flow to and from unauthenticated connections (#7398)
  • Fixed: Password generator not using the full alphabet (#7313)
  • Fixed: Various server-side bug fixes which could lead to crashes or denial-of-service (#7398)

Both

  • Fixed: IP netmask handling (#7283)
  • Fixed: Network Quality of Service setting with IPv6 (#7345)
  • Fixed: Versioning scheme on Windows 10 (21H1) or greater (#7263)

Miscellaneous

  • Fixed: Various build issues under many different toolchain configurations

Known issues

  • Overlay blocked by CS:GO Trusted Mode