Changelog

Release notes for every version of Umbra Browser.

v1.0.0

Initial Release

March 2026

First public release of Umbra Browser, built on Firefox ESR 140.8
Privacy Control Center with Balanced, Strict, and Maximum presets
WASM sandbox enabled via WASI SDK
uBlock Origin pre-installed and configured
All Firefox telemetry and data collection disabled via enterprise policies
Widevine DRM disabled by default with easy opt-in for streaming
about:umbra transparency page listing all modifications
Windows installer, Flatpak, RPM, DEB, and tar.xz packages

For the full commit history, see the GitHub releases page.