New Release: Tor Browser 14.5.2

[system]

by ma1 | May 18, 2025

Tor Browser 14.5.2 is now available from the Tor Browser download page and also from our distribution directory.

This version includes important security updates to Firefox.

Send us your feedback

If you find a bug or have a suggestion for how we could improve this release, please let us know.

Full changelog

The full changelog since Tor Browser 14.5.1 is:

• All Platforms
  • Bug tor-browser#43397: Click to play should override "Any capability blocked in the top document must be blocked in its subdocuments too"
  • Bug tor-browser#43802: Rebase Tor Browser Stable onto Firefox 128.10.1esr
  • Bug tor-browser-build#41460: Add brizental to the list of people who can sign Tor Browser and Mullvad Browser tags
• Windows + macOS + Linux
  • Updated Firefox to 128.10.1esr
  • Bug tor-browser#43635: Console noise due to the x-load capability not being localized
  • Bug tor-browser#43738: Backport Bugzilla 1947157: Move linux security warning content into own page
• Android
  • Updated GeckoView to 128.10.1esr
• Build System
  • All Platforms
    • Bug tor-browser#43777: Disable ./mach telemetry
    • Bug tor-browser-build#41449: Add prefix to update-responses xml files
    • Bug tor-browser-build#41451: When update-responses contains multiple versions, .htaccess only has one no-update.xml redirect
    • Bug tor-browser-build#41452: Skip update-responses xml files for versions which don't have incrementals
  • Windows + Linux + Android
    • Updated Go to 1.23.9

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This is a companion discussion topic for the original entry at https://blog.torproject.org/new-release-tor-browser-1452

[Noino]

I’m currently trying to do a full build of TB 14.5.2 on my local machine and am encountering connection failures related to the file https://build-sources.tbb.torproject.org/manual_277399.zip like the following. As I write it’s on its 10th retry:

Building project manual - manual-277399-a9a70b.tar.gz
Using file /home/me/gitlab/tor-browser-build/out/container-image/container-image_bookworm-amd64-8a41c6c5dfd0.tar.gz
--2025-05-19 14:32:03--  https://build-sources.tbb.torproject.org/manual_277399.zip
Resolving build-sources.tbb.torproject.org (build-sources.tbb.torproject.org)... 204.8.99.112, 2620:7:6002:0:3eec:efff:fed5:6c40
Connecting to build-sources.tbb.torproject.org (build-sources.tbb.torproject.org)|204.8.99.112|:443... failed: Connection timed out.
Connecting to build-sources.tbb.torproject.org (build-sources.tbb.torproject.org)|2620:7:6002:0:3eec:efff:fed5:6c40|:443... failed: Connection timed out.
Retrying.

I build all new releases of TB release and alpha and have not encountered this issue before, so some guidance would be appreciated.

If relevant my local system is Debian 12 based and I am using the command make torbrowser-release-linux-x86_64 in my clone of the tor-browser-build repo. A ping of the IP address referenced above (204.8.99.112) fails, is part of your infrastructure temporarily down? TIA.

Update: build-sources.tbb.torproject.org is back up and I’ve completed the build