September 2025 - tor-announce - lists.torproject.org

[RELEASE] Tor stable 0.4.8.18 and alpha 0.4.9.3-alpha
by David Goulet 16 Sep '25

16 Sep '25

Greetings, We just released 0.4.8.18 stable and 0.4.9.3-alpha: https://forum.torproject.org/t/alpha-and-stable-release-0-4-8-18-and-0-4-9-… Here is the ChangeLog for both. Cheers! Changes in version 0.4.9.3-alpha - 2025-09-16 This is the third alpha release and likely the last before going stable. This release contains the new CGO circuit encryption. See proposal 359 for more details. Several TLS minor fixes which will strengthen the link security. o New system requirements: - When built with LibreSSL, Tor now requires LibreSSL 3.7 or later. Part of ticket 41059. - When built with OpenSSL, Tor now requires OpenSSL 1.1.1 or later. (We strongly recommend 3.0 or later, but still build with 1.1.1, even though it is not supported by the OpenSSL team, due to its presence in Debian oldstable.) Part of ticket 41059. o Major features (cell format): - Tor now has (unused) internal support to encode and decode relay messages in the new format required by our newer CGO encryption algorithm. Closes ticket 41051. Part of proposal 359. o Major features (cryptography): - Clients and relays can now negotiate Counter Galois Onion (CGO) relay cryptography, as designed by Jean Paul Degabriele, Alessandro Melloni, Jean-Pierre Münch, and Martijn Stam. CGO provides improved resistance to several kinds of tagging attacks, better forward secrecy, and better forgery resistance. Closes ticket 41047. Implements proposal 359. o Major bugfixes (onion service directory cache): - Preserve the download counter of an onion service descriptor across descriptor uploads, so that recently updated descriptors don't get pruned if there is memory pressure soon after update. Additionally, create a separate torrc option MaxHSDirCacheBytes that defaults to the former 20% of MaxMemInQueues threshold, but can be controlled by relay operators under DoS. Also enforce this theshold during HSDir uploads. Fixes bug 41006; bugfix on 0.4.8.14. o Minor features (security): - Increase the size of our finite-field Diffie Hellman TLS group (which we should never actually use!) to 2048 bits. Part of ticket 41067. - Require TLS version 1.2 or later. (Version 1.3 support will be required in the near future.) Part of ticket 41067. - Update TLS 1.2 client cipher list to match current Firefox. Part of ticket 41067. o Minor features (security, TLS): - When we are running with OpenSSL 3.5.0 or later, support using the ML-KEM768 for post-quantum key agreement. Closes ticket 41041. o Minor feature (client, TLS): - Set the TLS 1.3 cipher list instead of falling back on the default value. o Minor feature (padding, logging): - Reduce the amount of messages being logged related to channel padding timeout when log level is "notice". o Minor features (bridges): - Save complete bridge lines to 'datadir/bridgelines'. Closes ticket 29128. o Minor features (fallbackdir): - Regenerate fallback directories generated on September 16, 2025. o Minor features (geoip data): - Update the geoip files to match the IPFire Location Database, as retrieved on 2025/09/16. o Minor features (hidden services): - Reduce the minimum value of hsdir_interval to match recent tor- spec change. o Minor features (hsdesc POW): - Tolerate multiple PoW schemes in onion service descriptors, for future extensibility. Implements torspec ticket 272. o Minor features (performance TLS): - When running with with OpenSSL 3.0.0 or later, support using X25519 for TLS key agreement. (This should slightly improve performance for TLS session establishment.) o Minor features (portability): - Fix warnings when compiling with GCC 15. Closes ticket 41079. o Minor bugfix (conflux): - Remove the pending nonce if we realize that the nonce of the unlinked circuit is not tracked anymore. Should avoid the non fatal assert triggered with a control port circuit event. Fixes bug 41037; bugfix on 0.4.8.15. o Minor bugfixes (bridges, pluggable transport): - Fix a bug causing the initial tor process to hang intead of exiting with RunAsDaemon, when pluggable transports are used. Fixes bug 41088; bugfix on 0.4.9.1-alpha. o Minor bugfixes (circuit handling): - Prevent circuit_mark_for_close() from being called twice on the same circuit. Fixes bug 40951; bugfix on 0.4.8.16-dev. - Prevent circuit_mark_for_close() from being called twice on the same circuit. Second fix attempt Fixes bug 41106; bugfix on 0.4.8.17 o Minor bugfixes (compilation): - Fix linking on systems without a working stdatomic.h. Fixes bug 41076; bugfix on 0.4.9.1-alpha. o Minor bugfixes (compiler warnings): - Make sure the two bitfields in the half-closed edge struct are unsigned, as we're using them for boolean values and assign 1 to them. Fixes bug 40911; bugfix on 0.4.7.2-alpha. o Minor bugfixes (logging, metrics port): - Count BUG statements for the MetricsPort only if they are warnings or errors. Fixes bug 41104; bugfix on 0.4.7.1-alpha. Patch contributed by shadowcoder. o Minor bugfixes (protocol): - Set the length field correctly on RELAY_COMMAND_CONFLUX_SWITCH messages. Previously, it was always set to the maximum value. Fixes bug 41056; bugfix on 0.4.8.1-alpha. o Minor bugfixes (relay): - Fix a crash when FamilyKeyDir is a path that cannot be read. Fixes bug 41043; bugfix on 0.4.9.2-alpha. o Minor bugfixes (threads): - Make thread control POSIX compliant. Fixes bug 41109; bugfix on 0.4.8.17-dev. o Removed features: - Relays no longer support clients that falsely advertise TLS ciphers they don't really support. (Clients have not done this since 0.2.3.17-beta). Part of ticket 41031. - Relays no longer support clients that require obsolete v1 and v2 link handshakes. (The v3 link handshake has been supported since 0.2.3.6-alpha). Part of ticket 41031. Changes in version 0.4.8.18 - 2025-09-16 This is a minor release with a major onion service directory cache (HSDir) bug fix. A series of minor bugfixes as well. As always, we strongly recommend to upgrade as soon as possible. o Major bugfixes (onion service directory cache): - Preserve the download counter of an onion service descriptor across descriptor uploads, so that recently updated descriptors don't get pruned if there is memory pressure soon after update. Additionally, create a separate torrc option MaxHSDirCacheBytes that defaults to the former 20% of MaxMemInQueues threshold, but can be controlled by relay operators under DoS. Also enforce this theshold during HSDir uploads. Fixes bug 41006; bugfix on 0.4.8.14. o Minor feature (padding, logging): - Reduce the amount of messages being logged related to channel padding timeout when log level is "notice". o Minor features (fallbackdir): - Regenerate fallback directories generated on September 16, 2025. o Minor features (geoip data): - Update the geoip files to match the IPFire Location Database, as retrieved on 2025/09/16. o Minor bugfix (conflux): - Remove the pending nonce if we realize that the nonce of the unlinked circuit is not tracked anymore. Should avoid the non fatal assert triggered with a control port circuit event. Fixes bug 41037; bugfix on 0.4.8.15. o Minor bugfixes (circuit handling): - Prevent circuit_mark_for_close() from being called twice on the same circuit. Second fix attempt Fixes bug 41106; bugfix on 0.4.8.17 o Minor bugfixes (threads): - Make thread control POSIX compliant. Fixes bug 41109; bugfix on 0.4.8.17-dev. -- 7foVekONn2ef4TNka+FUrpiKMgHwqW5UJwOt0iGfiXQ=

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New Release: Tor Browser 14.5.7 (Android, Windows, macOS, Linux)
by Giorgio Maone 16 Sep '25

16 Sep '25

Hi everyone, Tor Browser 14.5.7 has now been published for all platforms. For details please see our blog post: - https://blog.torproject.org/new-release-tor-browser-1457 Changelog: Tor Browser 14.5.7 - September 16 2025 * All Platforms * Updated OpenSSL to 3.5.2 * Bug 44136: Backport tor-browser#44081: Swiping away the "private tabs" notification requires rebootstrapping [tor-browser] * Bug 44199: Backport Security Fixes from Firefox 143 [tor-browser] * Bug 41441: Backport tor-browser-build#41432: Bump OpenSSL to 3.5.0 [tor-browser-build] * Bug 41462: Backport #40994 and #41280: Add support in signing scripts to sign release for some archs only & Update download-android-*.json files for android-only releases [tor-browser-build] * Bug 41543: mmdebstrap-image fails to build bookworm images on maint-14.5 [tor-browser-build] * Build System * All Platforms * Bug 41554: Export SIGNING_PROJECTNAME and tbb_version in linux-signer-sign-android-apks, in maint-14.5 [tor-browser-build] -- ma1

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New Release: Tor Browser 15.0a2 (Android, Windows, macOS, Linux)
by Giorgio Maone 01 Sep '25

01 Sep '25

Hi everyone, Tor Browser 15.0a2 has now been published for all platforms. For details please see our blog post: - https://blog.torproject.org/new-release-tor-browser-150a2 Changelog: * All Platforms o Updated NoScript to 13.0.9 o Updated OpenSSL to 3.5.2 o Bug tor-browser#43727 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43727>: Update moz-toggle customisation for ESR 140 o Bug tor-browser#43832 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43832>: Drop eslint-env o Bug tor-browser#43864 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43864>: Remove features from the unified search button o Bug tor-browser#44045 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44045>: Drop AI and machine learning components o Bug tor-browser#44048 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44048>: Backport Bug 1979608 o Bug tor-browser#44069 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44069>: Update |meek-azure| related strings to |meek| o Bug tor-browser#44094 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44094>: Rebase Tor Browser alpha onto 140.2.0esr o Bug tor-browser#44100 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44100>: Backport Security Fixes from Firefox 142 o Bug tor-browser#44140 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44140>: Align PDF changes to 140esr o Bug tor-browser-build#41442 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Update our audit CSVs to use the new Audit template * Windows + macOS + Linux o Updated Firefox to 140.2.0esr o Bug tor-browser#43111 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43111>: Delete our webextensions for search engines when Bug 1885953 is fixed upstream o Bug tor-browser#43519 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43519>: Replace tor-loading.png with SVG o Bug tor-browser#43525 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43525>: Check if our search engine customization still works after ESR 140 transition o Bug tor-browser#43728 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43728>: Update search engine icon sizes o Bug tor-browser#43795 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43795>: Restore the URL classifier XPCOM components. o Bug tor-browser#43817 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43817>: Write e2e test for verifying if the browser is connected to the Tor network o Bug tor-browser#43844 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43844>: Security level shield icon should be flipped for RTL locales o Bug tor-browser#43874 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43874>: Incorporate our unified extension button hiding logic into mozilla's changes for ESR 140 o Bug tor-browser#43901 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43901>: Modify about:license for Tor Browser and drop about:rights o Bug tor-browser#43902 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43902>: Hide Sidebar buttons o Bug tor-browser#43903 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43903>: Report broken site is disabled rather than hidden o Bug tor-browser#44030 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44030>: Security Level selector does not get confirmation before restarting o Bug tor-browser#44034 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44034>: Update string used for checkbox on New Identity confirmation dialog o Bug tor-browser#44040 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44040>: Modify nsIPrompt and the commonDialog code to allow destructive buttons o Bug tor-browser#44041 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44041>: Letterboxing causes greyed out alert background to be mis-aligned o Bug tor-browser#44090 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44090>: Several of our XUL pages cause a crash because of missing CSP o Bug tor-browser#44095 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44095>: Rename connectionPane.xhtml and remove it from the jar o Bug tor-browser#44106 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44106>: Make sure background tasks are not used for shutdown cleanup o Bug tor-browser#44115 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44115>: Make remove all bridges dialog use a destructive red button o Bug tor-browser#44125 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44125>: Do not offer to save signatures by default in Private Browsing Mode * Windows + Android o Bug tor-browser#44062 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44062>: Force touch enabled on Windows and Android * Windows o Bug tor-browser#44046 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44046>: Replace BASE_BROWSER_UPDATE with BASE_BROWSER_VERSION in the font visibility list * macOS o Bug tor-browser#44127 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44127>: Do not show macOS Privacy hint on network error pages * Android o Updated GeckoView to 140.2.0esr o Bug tor-browser#43179 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43179>: Make persistent 'private tabs' notification distinct from Firefox's o Bug 43346: Remove the "[android] Stop PrivateNotificationService" patch [tor-browser] o Bug tor-browser#43645 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43645>: Swiping away doesn't always disconnect from tor o Bug tor-browser#43699 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43699>: Dummy "about:" pages are not cleared from recently closed tabs (and possibly elsewhere) because they are normal tabs, not private tabs. o Bug tor-browser#43826 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/43826>: Review Mozilla 1960122: Use |MOZ_BUILD_DATE| in Fenix build configuration o Bug tor-browser#44021 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44021>: Android settings page colors are sometimes messed up (seems to be on the first launch) o Bug tor-browser#44042 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44042>: Debug crash when opening settings too quickly after launching app o Bug tor-browser#44047 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44047>: Tor Browser's home doesn't have the background at the first load on Android o Bug tor-browser#44081 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44081>: Swiping away the "private tabs" notification requires rebootstrapping. o Bug tor-browser#44083 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44083>: "snowflake" is lower case on Android o Bug tor-browser#44098 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44098>: Bookmarks offer a way to go to sync in 15.0a1 o Bug tor-browser#44139 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44139>: Restore the (inactive) YouTube and Reddit search plugins on Android * Build System o All Platforms + Bug tor-browser#44061 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44061>: "Contributing" link is broken + Bug tor-browser#44067 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44067>: Move --enable-geckodriver only to Linux-only mozconfigs + Bug tor-browser#44103 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44103>: git's export-subst is a reproducibility problem + Bug tor-browser#44104 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44104>: Don't run linter when there are no overall changes + Bug tor-browser-build#26408 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/2…>: Make MAR signature checks clearer when creating incremental MAR files + Bug tor-browser-build#40551 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Drop go reproducibility patches + Bug tor-browser-build#40697 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Delete repackage_browser.sh + Bug tor-browser-build#40698 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Update locale in tbb_version.json + Bug tor-browser-build#41517 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Add morgan's key to the setup account on the signing machine + Bug tor-browser-build#41522 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Adapt our signing scripts to be able to sign the VPN app + Bug tor-browser-build#41534 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Copy geckodriver only for Linux x86-64 + Bug tor-browser-build#41537 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Add script to count mar downloads from web logs + Bug tor-browser-build#41539 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Update Ubuntu version used to run mmdebstrap to 24.04.3 + Bug rbm#40087 <https://gitlab.torproject.org/tpo/applications/rbm/-/issues/40087>: Downloaded files getting stricter permissions than expected o Windows + Linux + Android + Updated Go to 1.24.6 o macOS + Bug tor-browser-build#41527 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Update libdmg-hfsplus and enable LZMA compression on dmgs + Bug tor-browser-build#41538 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Bump macOS SDK to 15.5 o Android + Bug tor-browser#44078 <https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44078>: Modify ./autopublish-settings.gradle for building a-s and glean with uniffi-bindgen no-op + Bug tor-browser-build#41523 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Use custom built Glean package on Android + Bug tor-browser-build#41531 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Update relprep.py script to handle application-services updates + Bug tor-browser-build#41548 <https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/4…>: Hide tor's symbols on Android and add other linker options to save space -- ma1

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