Mumble 1.5.901

Posted on May 17, 2026 by Hartmnt

Today we release the third patch release in the Mumble 1.5.x series. We have fixed a long standing issue with analog input devices such as racing wheels causing Mumble to hang!

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.

Changelog

This is the full changelog for this release (changes relative to the Mumble 1.5.857 release).

Client

  • Fixed: Crash when invalid varint encodings are parsed (#7148)
  • Fixed: Don’t send placeholder when using paste+send, if window is out-of-focus (#7121)
  • Fixed: Ensure we never write to invalid socket (#7168)
  • Fixed: Explicitly request accessibility permissions on macOS (#7041)
  • Fixed: Hangs from input events caused by analog input devices such as racing wheels (#6696)
  • Fixed: Opus related out-of-bounds memory access CVE-2025-71264 (#7033)

Server

  • Fixed: Crash when invalid varint encodings are parsed (#7148)
  • Fixed: Ensure we never write to invalid socket (#7168)
  • Fixed: First audio packet for new whisper getting dropped (#7177)
  • Fixed: Rare crash caused by negative public server list registration timer (#6959)

Miscellaneous

  • Fixed: Rare buffer overflow in Mumble overlay (#6990)
  • Fixed: Windows installer quitting prematurely, if newer version of VC_redist is already installed (#7086)

Known issues

  • Windows server crashing when bonjour option is enabled. Disable this option for now to fix the crash (#7071)
  • macOS binaries not being signed/notarized (overlay installer not signed) (#4263)
  • Overlay blocked by CS:GO Trusted Mode