[Tails-dev] Tor Browser 15.0.20 Ready

Hello,

Tor Browser Stable (unscheduled release driven by a tor security update) is ready for Tails. Build artifacts can be found here:
-https://tb-build-02.torproject.org/~ma1/builds/torbrowser/release/unsigned/15.0.20-build1/


Changelog:

Tor Browser 15.0.20 - August 18 2026
  * All Platforms
    * Bug 45204: Rebase Tor Browser stable onto 140.14.0esr [tor-browser]
    * Bug 45219: Backport Security Fixes from Firefox 154 [tor-browser]
  * Windows + macOS + Linux
    * Updated Firefox to 140.14.0esr
  * Android
    * Updated GeckoView to 140.14.0esr
  * Build System
    * All Platforms
      * Bug 41839: Backport tor-browser-build-browser#41831: Update libevent to 2.1.13 [tor-browser-build]
      * Bug 41850: Update keyring/torbrowser.gpg for new subkey and updated expiration date of the main key [tor-browser-build]
    * Windows + Linux + Android
      * Updated Go to 1.25.13

--
ma1