[Tails-dev] Tor Browser 15.0.21 Ready

Hello,

Tor Browser Stable is ready for Tails. Build artifacts can be found here:
-https://tb-build-02.torproject.org/~ma1/builds/torbrowser/release/unsigned/15.0.21-build1


Changelog:

Tor Browser 15.0.21 - September 01 2026
  * All Platforms
    * Updated NoScript to 13.6.32.1984
    * Updated OpenSSL to 3.5.8
    * Bug 45223: Backport tor-browser#45220 -about:torconnect doesn't show when launching the browser in non-PBM [tor-browser]
    * Bug 45253: Rebase Tor Browser stable onto 140.15.0esr [tor-browser]
    * Bug 45259: Backport Security Fixes from Firefox 155 [tor-browser]
  * Windows + macOS + Linux
    * Updated Firefox to 140.15.0esr
    * Bug 44996: Change the 32-bit linux message to the expired version for the final 15.0 release [tor-browser]
    * Bug 45264: Use parent process for TorConnect redirections [tor-browser]
  * Android
    * Updated GeckoView to 140.15.0esr
  * Build System
    * Windows + Linux + Android
      * Updated Go to 1.25.14

--
ma1