Tor Browser 15.0.10 is now available from the Tor Browser download page (https://www.torproject.org/download/) and also from our distribution directory (https://www.torproject.org/dist/torbrowser/15.0.10/).

This version includes important security updates (https://www.mozilla.org/en-US/security/advisories/) 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 (https://support.torproject.org/misc/bug-or-feedback/).

Full changelog The full changelog (https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/raw/maint-15.0/projects/browser/Bundle-Data/Docs-TBB/ChangeLog.txt) since Tor Browser 15.0.9 is:

• All Platforms

• Updated OpenSSL to 3.5.6

• Bug tor-browser#44749 (https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44749): Check search engines parameter replacements

• Bug tor-browser#44852 (https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44852): Rebase Tor Browser stable onto 140.10.0esr

• Bug tor-browser#44859 (https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44859): Backport Bugzilla 1666613: Display XML error pages in the browser directionality while force LTRing the XML code itself, without the use of intl.css

• Bug tor-browser#44863 (https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44863): Backport Security Fixes from Firefox 150

• Bug tor-browser-build#41775 (https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/41775): Update list of Snowflake STUN servers in default bridge line, 2026 edition

• Windows + macOS + Linux

• Updated Firefox to 140.10.0esr

• Bug tor-browser#44288 (https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44288): New identity fails to block loading a custom home page

• Android

• Updated GeckoView to 140.10.0esr

• Build System

• All Platforms

• Bug tor-browser-build#41767 (https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/41767): Add jwilde to allowed signer for browser projects

• Windows + Linux + Android

• Updated Go to 1.25.9

•

      applications
     (https://blog.torproject.org/category/applications)

•

      releases
     (https://blog.torproject.org/category/releases)