synapse/CHANGES.md

Synapse 1.135.0 (2025-08-01)

No significant changes since 1.135.0rc2.

Synapse 1.135.0rc2 (2025-07-30)

Bugfixes

• Fix user failing to deactivate with MAS when /_synapse/mas is handled by a worker. (#18716)

Internal Changes

• Fix performance regression introduced in #18238 by adding a cache to is_server_admin. (#18747)

Synapse 1.135.0rc1 (2025-07-22)

Features

• Add recaptcha_private_key_path and recaptcha_public_key_path config option. (#17984, #18684)
• Add plain-text handling for rich-text topics as per MSC3765. (#18195)
• If enabled by the user, server admins will see soft failed events over the Client-Server API. (#18238)
• Add experimental support for MSC4277: Harmonizing the reporting endpoints. (#18263)
• Add ability to limit amount of media uploaded by a user in a given time period. (#18527)
• Enable workers to write directly to the device lists stream and handle device list updates, reducing load on the main process. (#18581)
• Support arbitrary profile fields. Contributed by @clokep. (#18635)
• Advertise support for Matrix v1.12. (#18647)
• Add an option to issue redactions as an admin user via the admin redaction endpoint. (#18671)
• Add experimental and incomplete support for MSC4306: Thread Subscriptions. (#18674)
• Include event_id when getting state with ?format=event. Contributed by @tulir @ Beeper. (#18675)

Bugfixes

• Fix CPU and database spinning when retrying sending events to servers whilst at the same time purging those events. (#18499)
• Don't allow creation of tags with names longer than 255 bytes, as per the spec. (#18660)
• Fix sliding_sync_connections-related errors when porting from SQLite to Postgres. (#18677)
• Fix the MAS integration not working when Synapse is started with --daemonize or using synctl. (#18691)

Improved Documentation

• Document that some config options for the user directory are in violation of the Matrix spec. (#18548)
• Update rc_delayed_event_mgmt docs to the actual nesting level. Contributed by @HarHarLinks. (#18692)

Internal Changes

• Add a dedicated internal API for Matrix Authentication Service to Synapse communication. (#18520)
• Allow user registrations to be done on workers. (#18552)
• Remove unnecessary HTTP replication calls. (#18564)
• Refactor Measure block metrics to be homeserver-scoped. (#18601)
• Refactor cache metrics to be homeserver-scoped. (#18604)
• Unbreak "Latest dependencies" workflow by using the --without dev poetry option instead of removed --no-dev. (#18617)
• Update URL Preview code to work with lxml 6.0.0+. (#18622)
• Use markdown-it-py instead of commonmark in the release script. (#18637)
• Fix typing errors with upgraded mypy version. (#18653)
• Add doc comment explaining that config files are shallowly merged. (#18664)
• Minor speed up of insertion into stream_positions table. (#18672)
• Remove unused allow_no_prev_events option when creating an event. (#18676)
• Clean up MetricsResource and Prometheus hacks. (#18687)
• Fix dirty Cargo.lock changes appearing after install (base64). (#18689)
• Prevent dirty Cargo.lock changes from install. (#18693)
• Correct spelling of 'Admin token used' log line. (#18697)
• Reduce log spam when client stops downloading media while it is being streamed to them. (#18699)

Updates to locked dependencies

• Bump authlib from 1.6.0 to 1.6.1. (#18704)
• Bump base64 from 0.21.7 to 0.22.1. (#18666)
• Bump jsonschema from 4.24.0 to 4.25.0. (#18707)
• Bump lxml from 5.4.0 to 6.0.0. (#18631)
• Bump mypy from 1.13.0 to 1.16.1. (#18653)
• Bump once_cell from 1.19.0 to 1.21.3. (#18710)
• Bump phonenumbers from 9.0.8 to 9.0.9. (#18681)
• Bump ruff from 0.12.2 to 0.12.5. (#18683, #18705)
• Bump serde_json from 1.0.140 to 1.0.141. (#18709)
• Bump sigstore/cosign-installer from 3.9.1 to 3.9.2. (#18708)
• Bump types-jsonschema from 4.24.0.20250528 to 4.24.0.20250708. (#18682)

Synapse 1.134.0 (2025-07-15)

No significant changes since 1.134.0rc1.

Synapse 1.134.0rc1 (2025-07-09)

Features

• Support for MSC4235: via query param for hierarchy endpoint. Contributed by Krishan (@kfiven). (#18070)
• Add forget_forced_upon_leave capability as per MSC4267. (#18196)
• Add federated_user_may_invite spam checker callback which receives the entire invite event. Contributed by @tulir @ Beeper. (#18241)

Bugfixes

• Fix KeyError on background updates when using split main/state databases. (#18509)
• Improve performance of device deletion by adding missing index. (#18582)
• Fix avatar_url and displayname being sent on federation profile queries when they are not set. (#18593)
• Respond with 401 & M_USER_LOCKED when a locked user calls POST /login, as per the spec. (#18594)
• Ensure policy servers are not asked to scan policy server change events, allowing rooms to disable the use of a policy server while the policy server is down. (#18605)

Improved Documentation

• Fix documentation of the Delete Room Admin API's status field. (#18519)

Deprecations and Removals

• Stop adding the "origin" field to newly-created events (PDUs). (#18418)

Internal Changes

• Replace PyICU crate with equivalent icu_segmenter Rust crate. (#18553, #18646)
• Improve docstring on simple_upsert_many. (#18573)
• Raise poetry-core version cap to 2.1.3. (#18575)
• Raise setuptools_rust version cap to 1.11.1. (#18576)
• Better handling of ratelimited requests. (#18595, #18600)
• Update to Rust 1.87.0 in CI, and bump the pinned commit of the dtolnay/rust-toolchain GitHub Action to b3b07ba8b418998c39fb20f53e8b695cdcc8de1b. (#18596)
• Speed up bulk device deletion. (#18602)
• Speed up the building of arm-based wheels in CI. (#18618)
• Speed up the building of Docker images in CI. (#18620)
• Add .zed/ directory to .gitignore. (#18623)
• Log the room ID we're purging state for. (#18625)

Updates to locked dependencies

• Bump Swatinem/rust-cache from 2.7.8 to 2.8.0. (#18612)
• Bump attrs from 24.2.0 to 25.3.0. (#18649)
• Bump authlib from 1.5.2 to 1.6.0. (#18642)
• Bump base64 from 0.21.7 to 0.22.1. (#18589)
• Bump base64 from 0.21.7 to 0.22.1. (#18629)
• Bump docker/build-push-action from 6.17.0 to 6.18.0. (#18497)
• Bump docker/setup-buildx-action from 3.10.0 to 3.11.1. (#18587)
• Bump hiredis from 3.1.0 to 3.2.1. (#18638)
• Bump ijson from 3.3.0 to 3.4.0. (#18650)
• Bump jsonschema from 4.23.0 to 4.24.0. (#18630)
• Bump msgpack from 1.1.0 to 1.1.1. (#18651)
• Bump mypy-zope from 1.0.11 to 1.0.12. (#18640)
• Bump phonenumbers from 9.0.2 to 9.0.8. (#18652)
• Bump pillow from 11.2.1 to 11.3.0. (#18624)
• Bump prometheus-client from 0.21.0 to 0.22.1. (#18609)
• Bump pyasn1-modules from 0.4.1 to 0.4.2. (#18495)
• Bump pydantic from 2.11.4 to 2.11.7. (#18639)
• Bump reqwest from 0.12.15 to 0.12.20. (#18590)
• Bump reqwest from 0.12.20 to 0.12.22. (#18627)
• Bump ruff from 0.11.11 to 0.12.1. (#18645)
• Bump ruff from 0.12.1 to 0.12.2. (#18657)
• Bump sentry-sdk from 2.22.0 to 2.32.0. (#18633)
• Bump setuptools-rust from 1.10.2 to 1.11.1. (#18655)
• Bump sigstore/cosign-installer from 3.8.2 to 3.9.0. (#18588)
• Bump sigstore/cosign-installer from 3.9.0 to 3.9.1. (#18608)
• Bump stefanzweifel/git-auto-commit-action from 5.2.0 to 6.0.1. (#18607)
• Bump tokio from 1.45.1 to 1.46.0. (#18628)
• Bump tokio from 1.46.0 to 1.46.1. (#18667)
• Bump treq from 24.9.1 to 25.5.0. (#18610)
• Bump types-bleach from 6.2.0.20241123 to 6.2.0.20250514. (#18634)
• Bump types-jsonschema from 4.23.0.20250516 to 4.24.0.20250528. (#18611)
• Bump types-opentracing from 2.4.10.6 to 2.4.10.20250622. (#18586)
• Bump types-psycopg2 from 2.9.21.20250318 to 2.9.21.20250516. (#18658)
• Bump types-pyyaml from 6.0.12.20241230 to 6.0.12.20250516. (#18643)
• Bump types-setuptools from 75.2.0.20241019 to 80.9.0.20250529. (#18644)
• Bump typing-extensions from 4.12.2 to 4.14.0. (#18654)
• Bump typing-extensions from 4.14.0 to 4.14.1. (#18668)
• Bump urllib3 from 2.2.2 to 2.5.0. (#18572)

Synapse 1.133.0 (2025-07-01)

Pre-built wheels are now built using the manylinux_2_28 base, which is expected to be compatible with distros using glibc 2.28 or later, including:

• Debian 10+
• Ubuntu 18.10+
• Fedora 29+
• CentOS/RHEL 8+

Previously, wheels were built using the manylinux2014 base, which was expected to be compatible with distros using glibc 2.17 or later.

Bugfixes

• Bump cibuildwheel to 3.0.0 to fix the manylinux wheel builds. (#18615)

Synapse 1.133.0rc1 (2025-06-24)

Features

• Add support for the MSC4260 user report API. (#18120)

Bugfixes

• Fix an issue where, during state resolution for v11 rooms, Synapse would incorrectly calculate the power level of the creator when there was no power levels event in the room. (#18534, #18547)
• Fix long-standing bug where sliding sync did not honour the room_id_to_include config option. (#18535)
• Fix an issue where "Lock timeout is getting excessive" warnings would be logged even when the lock timeout was <10 minutes. (#18543)
• Fix an issue where Synapse could calculate the wrong power level for the creator of the room if there was no power levels event. (#18545)

Improved Documentation

• Generate config documentation from JSON Schema file. (#18528)
• Fix typo in user type documentation. (#18568)

Internal Changes

• Increase performance of introspecting access tokens when using delegated auth. (#18357, #18561)
• Log user deactivations. (#18541)
• Enable flake8-logging and flake8-logging-format rules in Ruff and fix related issues throughout the codebase. (#18542)
• Clean up old, unused rows from the device_federation_inbox table. (#18546)
• Run config schema CI on develop and release branches. (#18551)
• Add support for Twisted 25.5.0+ releases. (#18577)
• Update PyO3 to version 0.25. (#18578)

Updates to locked dependencies

• Bump actions/setup-python from 5.5.0 to 5.6.0. (#18555)
• Bump base64 from 0.21.7 to 0.22.1. (#18559)
• Bump dawidd6/action-download-artifact from 9 to 11. (#18556)
• Bump headers from 0.4.0 to 0.4.1. (#18529)
• Bump requests from 2.32.2 to 2.32.4. (#18533)
• Bump types-requests from 2.32.0.20250328 to 2.32.4.20250611. (#18558)

Synapse 1.132.0 (2025-06-17)

Improved Documentation

• Improvements to generate config documentation from JSON Schema file. (#18522)

Synapse 1.132.0rc1 (2025-06-10)

Features

• Add support for MSC4155 Invite Filtering. (#18288)
• Add experimental user_may_send_state_event module API callback. (#18455)
• Add experimental get_media_config_for_user and is_user_allowed_to_upload_media_of_size module API callbacks that allow overriding of media repository maximum upload size. (#18457)
• Add experimental get_ratelimit_override_for_user module API callback that allows overriding of per-user ratelimits. (#18458)
• Pass room_config argument to user_may_create_room spam checker module callback. (#18486)
• Support configuration of default and extra user types. (#18456)
• Successful requests to /_matrix/app/v1/ping will now force Synapse to reattempt delivering transactions to appservices. (#18521)
• Support the import of the RatelimitOverride type from synapse.module_api in modules and rename messages_per_second to per_second. (#18513)

Bugfixes

• Remove destinations from sending if not whitelisted. (#18484)
• Fixed room summary API incorrectly returning that a room is private in the room summary response when the join rule is omitted by the remote server. Contributed by @nexy7574. (#18493)
• Prevent users from adding themselves to their own user ignore list. (#18508)

Improved Documentation

• Generate config documentation from JSON Schema file. (#17892)
• Mention CAP_NET_BIND_SERVICE as an alternative to running Synapse as root in order to bind to a privileged port. (#18408)
• Surface hidden Admin API documentation regarding fetching of scheduled tasks. (#18516)
• Mark the new module APIs in this release as experimental. (#18536)

Internal Changes

• Mark dehydrated devices in the List All User Devices Admin API. (#18252)
• Reduce disk wastage by cleaning up received_transactions older than 1 day, rather than 30 days. (#18310)
• Distinguish all vs local events being persisted in the "Event Send Time Quantiles" graph (Grafana). (#18510)

Synapse 1.131.0 (2025-06-03)

No significant changes since 1.131.0rc1.

Synapse 1.131.0rc1 (2025-05-28)

Features

• Add msc4263_limit_key_queries_to_users_who_share_rooms config option as per MSC4263. (#18180)
• Add option to allow registrations that begin with _. Contributed by _ (@hex5f). (#18262)
• Include room ID in response to the Room Deletion Status Admin API. (#18318)
• Add support for calling Policy Servers (MSC4284) to mark events as spam. (#18387)

Bugfixes

• Prevent race-condition in _maybe_retry_device_resync entrance. (#18391)
• Fix the tests.handlers.test_worker_lock.WorkerLockTestCase.test_lock_contention test which could spuriously time out on RISC-V architectures due to performance differences. (#18430)
• Fix admin redaction endpoint not redacting encrypted messages. (#18434)

Improved Documentation

• Update room_list_publication_rules docs to consider defaults that changed in v1.126.0. Contributed by @HarHarLinks. (#18286)
• Add advice for upgrading between major PostgreSQL versions to the database documentation. (#18445)

Internal Changes

• Fix a memory leak in _NotifierUserStream. (#18380)
• Fix a couple type annotations in the RootConfig/Config. (#18409)
• Explicitly enable PyPy builds in cibuildwheels config to avoid it being disabled on a future upgrade to cibuildwheel v3. (#18417)
• Update the PR review template to remove an erroneous line break from the final bullet point. (#18419)
• Explain why we flush_buffer() for Python print(...) output. (#18420)
• Add lint to ensure we don't add a CREATE/DROP INDEX in a schema delta. (#18440)
• Allow checking only for the existence of a field in an SSO provider's response, rather than requiring the value(s) to check. (#18454)
• Add unit tests for homeserver usage statistics. (#18463)
• Don't move invited users to new room when shutting down room. (#18471)

Updates to locked dependencies

• Bump actions/setup-python from 5.5.0 to 5.6.0. (#18398)
• Bump authlib from 1.5.1 to 1.5.2. (#18452)
• Bump docker/build-push-action from 6.15.0 to 6.17.0. (#18397, #18449)
• Bump lxml from 5.3.0 to 5.4.0. (#18480)
• Bump mypy-zope from 1.0.9 to 1.0.11. (#18428)
• Bump pyo3 from 0.23.5 to 0.24.2. (#18460)
• Bump pyo3-log from 0.12.3 to 0.12.4. (#18453)
• Bump pyopenssl from 25.0.0 to 25.1.0. (#18450)
• Bump ruff from 0.7.3 to 0.11.11. (#18451, #18482)
• Bump tornado from 6.4.2 to 6.5.0. (#18459)
• Bump setuptools from 72.1.0 to 78.1.1. (#18461)
• Bump types-jsonschema from 4.23.0.20241208 to 4.23.0.20250516. (#18481)
• Bump types-requests from 2.32.0.20241016 to 2.32.0.20250328. (#18427)

Synapse 1.130.0 (2025-05-20)

Bugfixes

• Fix startup being blocked on creating a new index that was introduced in v1.130.0rc1. (#18439)
• Fix the ordering of local messages in rooms that were affected by GHSA-v56r-hwv5-mxg6. (#18447)

Synapse 1.130.0rc1 (2025-05-13)

Features

• Add an Admin API endpoint GET /_synapse/admin/v1/scheduled_tasks to fetch scheduled tasks. (#18214)
• Add config option user_directory.exclude_remote_users which, when enabled, excludes remote users from user directory search results. (#18300)
• Add support for handling GET /devices/ on workers. (#18355)

Bugfixes

• Fix a longstanding bug where Synapse would immediately retry a failing push endpoint when a new event is received, ignoring any backoff timers. (#18363)
• Pass leave from remote invite rejection down Sliding Sync. (#18375)

Updates to the Docker image

• In configure_workers_and_start.py, use the same absolute path of Python in the interpreter shebang, and invoke child Python processes with sys.executable. (#18291)
• Optimize the build of the workers image. (#18292)
• In start_for_complement.sh, replace some external program calls with shell builtins. (#18293)
• When generating container scripts from templates, don't add a leading newline so that their shebangs may be handled correctly. (#18295)

Improved Documentation

• Improve formatting of the README file. (#18218)
• Add documentation for configuring Pocket ID as an OIDC provider. (#18237)
• Fix typo in docs about the push config option. Contributed by @HarHarLinks. (#18320)
• Add /_matrix/federation/v1/version to list of federation endpoints that can be handled by workers. (#18377)
• Add an Admin API endpoint GET /_synapse/admin/v1/scheduled_tasks to fetch scheduled tasks. (#18384)

Internal Changes

• Return specific error code when adding an email address / phone number to account is not supported (MSC4178). (#17578)
• Stop auto-provisionning missing users & devices when delegating auth to Matrix Authentication Service. Requires MAS 0.13.0 or later. (#18181)
• Apply file hashing and existing quarantines to media downloaded for URL previews. (#18297)
• Allow a few admin APIs used by matrix-authentication-service to run on workers. (#18313)
• Apply should_drop_federated_event to federation invites. (#18330)
• Allow /rooms/ admin API to be run on workers. (#18360)
• Minor performance improvements to the notifier. (#18367)
• Slight performance increase when using the ratelimiter. (#18369)
• Don't validate the at_hash (access token hash) field in OIDC ID Tokens if we don't end up actually using the OIDC Access Token. (#18374, #18385)
• Fixed test failures when using authlib 1.5.2. (#18390)
• Refactor MSC4186 Simplified Sliding Sync room list tests to cover both new and fallback logic paths. (#18399)

Updates to locked dependencies

• Bump actions/add-to-project from 280af8ae1f83a494cfad2cb10f02f6d13529caa9 to 5b1a254a3546aef88e0a7724a77a623fa2e47c36. (#18365)
• Bump actions/download-artifact from 4.2.1 to 4.3.0. (#18364)
• Bump actions/setup-go from 5.4.0 to 5.5.0. (#18426)
• Bump anyhow from 1.0.97 to 1.0.98. (#18336)
• Bump packaging from 24.2 to 25.0. (#18393)
• Bump pillow from 11.1.0 to 11.2.1. (#18429)
• Bump pydantic from 2.10.3 to 2.11.4. (#18394)
• Bump pyo3-log from 0.12.2 to 0.12.3. (#18317)
• Bump pyopenssl from 24.3.0 to 25.0.0. (#18315)
• Bump sha2 from 0.10.8 to 0.10.9. (#18395)
• Bump sigstore/cosign-installer from 3.8.1 to 3.8.2. (#18366)
• Bump softprops/action-gh-release from 1 to 2. (#18264)
• Bump stefanzweifel/git-auto-commit-action from 5.1.0 to 5.2.0. (#18354)
• Bump txredisapi from 1.4.10 to 1.4.11. (#18392)
• Bump types-jsonschema from 4.23.0.20240813 to 4.23.0.20241208. (#18305)
• Bump types-psycopg2 from 2.9.21.20250121 to 2.9.21.20250318. (#18316)

Synapse 1.129.0 (2025-05-06)

No significant changes since 1.129.0rc2.

Synapse 1.129.0rc2 (2025-04-30)

Synapse 1.129.0rc1 was never formally released due to regressions discovered during the release process. 1.129.0rc2 fixes those regressions by reverting the affected PRs.

Internal Changes

• Revert the slow background update introduced by #18068 in v1.128.0. (#18372)
• Revert "Add total event, unencrypted message, and e2ee event counts to stats reporting", added in v1.129.0rc1. (#18373)

Synapse 1.129.0rc1 (2025-04-15)

Features

• Add passthrough_authorization_parameters in OIDC configuration to allow passing parameters to the authorization grant URL. (#18232)
• Add total_event_count, total_message_count, and total_e2ee_event_count fields to the homeserver usage statistics. (#18260)

Bugfixes

• Fix force_tracing_for_users config when using delegated auth. (#18334)
• Fix the token introspection cache logging access tokens when MAS integration is in use. (#18335)
• Stop caching introspection failures when delegating auth to MAS. (#18339)
• Fix ExternalIDReuse exception after migrating to MAS on workers with a high traffic. (#18342)
• Fix minor performance regression caused by tracking of room participation. Regressed in v1.128.0. (#18345)

Updates to the Docker image

• Optimize the build of the complement-synapse image. (#18294)

Internal Changes

• Disable statement timeout during room purge. (#18133)
• Add cache to storage functions used to auth requests when using delegated auth. (#18337)

Synapse 1.128.0 (2025-04-08)

No significant changes since 1.128.0rc1.

Synapse 1.128.0rc1 (2025-04-01)

Features

• Add an access token introspection cache to make Matrix Authentication Service integration (MSC3861) more efficient. (#18231)
• Add background job to clear unreferenced state groups. (#18254)
• Hashes of media files are now tracked by Synapse. Media quarantines will now apply to all files with the same hash. (#18277, #18302, #18296)

Bugfixes

• Add index to sliding sync (MSC4186) membership snapshot table, to fix a performance issue. (#18074)

Updates to the Docker image

• Specify the architecture of installed packages via an APT config option, which is more reliable than appending package names with :{arch}. (#18271)
• Always specify base image debian versions with a build argument. (#18272)
• Allow passing arguments to start_for_complement.sh (to be sent to configure_workers_and_start.py). (#18273)
• Make some improvements to the prefix-log script in the workers image. (#18274)
• Use uv pip to install supervisor in the worker image. (#18275)
• Avoid needing to download & use rsync in a build layer. (#18287)

Improved Documentation

• Fix how to obtain access token and change naming from riot to element (#18225)
• Correct a small typo in the SSO mapping providers documentation. (#18276)
• Add docs for how to clear out the Poetry wheel cache. (#18283)

Internal Changes

• Add a column participant to room_memberships table. (#18068)
• Update Poetry to 2.1.1, including updating the lock file version. (#18251)
• Pin GitHub Actions dependencies by commit hash. (#18255)
• Add DB delta to remove the old state group deletion job. (#18284)

Updates to locked dependencies

• Bump actions/add-to-project from f5473ace9aeee8b97717b281e26980aa5097023f to 280af8ae1f83a494cfad2cb10f02f6d13529caa9. (#18303)
• Bump actions/cache from 4.2.2 to 4.2.3. (#18266)
• Bump actions/download-artifact from 4.2.0 to 4.2.1. (#18268)
• Bump actions/setup-python from 5.4.0 to 5.5.0. (#18298)
• Bump actions/upload-artifact from 4.6.1 to 4.6.2. (#18304)
• Bump authlib from 1.4.1 to 1.5.1. (#18306)
• Bump dawidd6/action-download-artifact from 8 to 9. (#18204)
• Bump jinja2 from 3.1.5 to 3.1.6. (#18223)
• Bump log from 0.4.26 to 0.4.27. (#18267)
• Bump phonenumbers from 8.13.50 to 9.0.2. (#18299)
• Bump pygithub from 2.5.0 to 2.6.1. (#18243)
• Bump pyo3-log from 0.12.1 to 0.12.2. (#18269)

Synapse 1.127.1 (2025-03-26)

Security

• Fix CVE-2025-30355 / GHSA-v56r-hwv5-mxg6. High severity vulnerability affecting federation. The vulnerability has been exploited in the wild.

Synapse 1.127.0 (2025-03-25)

No significant changes since 1.127.0rc1.

Synapse 1.127.0rc1 (2025-03-18)

Features

• Update MSC4140 implementation to no longer cancel a user's own delayed state events with an event type & state key that match a more recent state event sent by that user. (#17810)

Improved Documentation

• Fixed a minor typo in the Synapse documentation. Contributed by @karuto12. (#18224)

Internal Changes

• Remove undocumented SYNAPSE_USE_FROZEN_DICTS environment variable. (#18123)
• Fix detection of workflow failures in the release script. (#18211)
• Add caching support to media endpoints. (#18235)

Updates to locked dependencies

• Bump anyhow from 1.0.96 to 1.0.97. (#18201)
• Bump bcrypt from 4.2.1 to 4.3.0. (#18207)
• Bump bytes from 1.10.0 to 1.10.1. (#18227)
• Bump http from 1.2.0 to 1.3.1. (#18245)
• Bump sentry-sdk from 2.19.2 to 2.22.0. (#18205)
• Bump serde from 1.0.218 to 1.0.219. (#18228)
• Bump serde_json from 1.0.139 to 1.0.140. (#18202)
• Bump ulid from 1.2.0 to 1.2.1. (#18246)

Synapse 1.126.0 (2025-03-11)

Administrators using the Debian/Ubuntu packages from packages.matrix.org, please check the relevant section in the upgrade notes as we have recently updated the expiry date on the repository's GPG signing key. The old version of the key will expire on 2025-03-15.

No significant changes since 1.126.0rc3.

Synapse 1.126.0rc3 (2025-03-07)

Bugfixes

• Revert the background job to clear unreferenced state groups (that was introduced in v1.126.0rc1), due to a suspected issue that causes increased disk usage. (#18222)

Synapse 1.126.0rc2 (2025-03-05)

Internal Changes

• Fix wheel building configuration in CI by installing libatomic1. (#18212, #18213)

Synapse 1.126.0rc1 (2025-03-04)

Synapse 1.126.0rc1 was not fully released due to an error in CI.

Features

• Define ratelimit configuration for delayed event management. (#18019)
• Add form_secret_path config option. (#18090)
• Add the --no-secrets-in-config command line option. (#18092)
• Add background job to clear unreferenced state groups. (#18154)
• Add support for specifying/overriding id_token_signing_alg_values_supported for an OpenID identity provider. (#18177)
• Add worker_replication_secret_path config option. (#18191)
• Add support for specifying/overriding redirect_uri in the authorization and token requests against an OpenID identity provider. (#18197)

Bugfixes

• Make sure we advertise registration as disabled when MSC3861 is enabled. (#17661)
• Prevent suspended users from sending encrypted messages. (#18157)
• Cleanup deleted state group references. (#18165)
• Fix MSC4108 QR-code login not working with some reverse-proxy setups. (#18178)
• Support device IDs that can't be represented in a scope when delegating auth to Matrix Authentication Service 0.15.0+. (#18174)

Updates to the Docker image

• Speed up the building of the Docker image. (#18038)

Improved Documentation

• Move incorrectly placed version indicator in User Event Redaction Admin API docs. (#18152)
• Document suspension Admin API. (#18162)

Deprecations and Removals

• Disable room list publication by default. (#18175)

Updates to locked dependencies

• Bump anyhow from 1.0.95 to 1.0.96. (#18187)
• Bump authlib from 1.4.0 to 1.4.1. (#18190)
• Bump click from 8.1.7 to 8.1.8. (#18189)
• Bump log from 0.4.25 to 0.4.26. (#18184)
• Bump pyo3-log from 0.12.0 to 0.12.1. (#18046)
• Bump serde from 1.0.217 to 1.0.218. (#18183)
• Bump serde_json from 1.0.138 to 1.0.139. (#18186)
• Bump sigstore/cosign-installer from 3.8.0 to 3.8.1. (#18185)
• Bump types-psycopg2 from 2.9.21.20241019 to 2.9.21.20250121. (#18188)

Synapse 1.125.0 (2025-02-25)

No significant changes since 1.125.0rc1.

Synapse 1.125.0rc1 (2025-02-18)

Features

• Add functionality to be able to use multiple values in SSO feature attribute_requirements. (#17949)
• Add experimental config options admin_token_path and client_secret_path for MSC3861. (#18004)
• Add get_current_time_msec() method to the module API for sound time comparisons with Synapse. (#18144)

Bugfixes

• Update the response when a client attempts to add an invalid email address to the user's account from a 500, to a 400 with error text. (#18125)
• Fix user directory search when using a legacy module with a check_username_for_spam callback. Broke in v1.122.0. (#18135)

Updates to the Docker image

• Add SYNAPSE_HTTP_PROXY/SYNAPSE_HTTPS_PROXY/SYNAPSE_NO_PROXY environment variables to pass through specifically to the Synapse process (instead of needing to apply http_proxy/https_proxy/no_proxy globally). (#18158)

Improved Documentation

• Add Oracle Linux 8 and 9 installation instructions. (#17436)
• Document missing server config options (daemonize, print_pidfile, user_agent_suffix, use_frozen_dicts, manhole). (#18122)
• Document consequences of replacing secrets. (#18138)
• Make burst_count field an integer in rc_presence config documentation example. (#18159)

Internal Changes

• Overload DatabasePool.simple_select_one_txn to return non-None when the allow_none parameter is False. (#17616)
• Python 3.8 EOL: compile native extensions with the 3.9 ABI and use typing hints from the standard library. (#17967)
• Add log message when worker lock timeouts get large. (#18124)
• Make it explicit that you can buy an AGPL-alternative commercial license from Element. (#18134)
• Fix the 'Fix linting' GitHub Actions workflow. (#18136)
• Do not log at the exception-level when clients provide empty since token to /sync API. (#18139)
• Reduce database load of user search when using large search terms. (#18172)

Updates to locked dependencies

• Bump bcrypt from 4.2.0 to 4.2.1. (#18127)
• Bump bytes from 1.9.0 to 1.10.0. (#18149)
• Bump gitpython from 3.1.43 to 3.1.44. (#18128)
• Bump hiredis from 3.0.0 to 3.1.0. (#18169)
• Bump serde_json from 1.0.137 to 1.0.138. (#18129)
• Bump service-identity from 24.1.0 to 24.2.0. (#18171)
• Bump sigstore/cosign-installer from 3.7.0 to 3.8.0. (#18147)
• Bump twine from 6.0.1 to 6.1.0. (#18170)
• Bump types-pyyaml from 6.0.12.20240917 to 6.0.12.20241230. (#18097)
• Bump ulid from 1.1.4 to 1.2.0. (#18148)

Synapse 1.124.0 (2025-02-11)

No significant changes since 1.124.0rc3.

Synapse 1.124.0rc3 (2025-02-07)

Bugfixes

• Fix regression in performance of sending events due to superfluous reads and locks. Introduced in v1.124.0rc1. (#18141)

Synapse 1.124.0rc2 (2025-02-05)

Bugfixes

• Fix regression where persisting events in some rooms could fail after a previous unclean shutdown. Introduced in v1.124.0rc1. (#18137)

Synapse 1.124.0rc1 (2025-02-04)

Bugfixes

• Add rate limit rc_presence.per_user. This prevents load from excessive presence updates sent by clients via sync api. Also rate limit /_matrix/client/v3/presence as per the spec. Contributed by @rda0. (#18000)
• Deactivated users will no longer automatically accept an invite when auto_accept_invites is enabled. (#18073)
• Fix join being denied after being invited over federation. Also fixes other out-of-band membership transitions. (#18075)
• Updates contributed docker-compose.yml file to PostgreSQL v15, as v12 is no longer supported by Synapse. Contributed by @maxkratz. (#18089)
• Fix rare edge case where state groups could be deleted while we are persisting new events that reference them. (#18107, #18130, #18131)
• Raise an error if someone is using an incorrect suffix in a config duration string. (#18112)
• Fix a bug where the Delete Room Admin API would fail if the block parameter was set to true and a worker other than the main process was configured to handle background tasks. (#18119)

Internal Changes

• Increase the length of the generated nonce parameter when perfoming OIDC logins to comply with the TI-Messenger spec. (#18109)

Updates to locked dependencies

• Bump dawidd6/action-download-artifact from 7 to 8. (#18108)
• Bump log from 0.4.22 to 0.4.25. (#18098)
• Bump python-multipart from 0.0.18 to 0.0.20. (#18096)
• Bump serde_json from 1.0.135 to 1.0.137. (#18099)
• Bump types-bleach from 6.1.0.20240331 to 6.2.0.20241123. (#18082)

Synapse 1.123.0 (2025-01-28)

No significant changes since 1.123.0rc1.

Synapse 1.123.0rc1 (2025-01-21)

Features

• Implement MSC4133 for custom profile fields. Contributed by @clokep. (#17488)
• Add a query parameter type to the Room State Admin API that filters the state event. (#18035)
• Support the new /auth_metadata endpoint defined in MSC2965. (#18093)

Bugfixes

• Fix membership caches not updating in state reset scenarios. (#17732)
• Fix rare race where on upgrade to v1.122.0 a long running database upgrade could lock out new events from being received or sent. (#18091)

Improved Documentation

• Document tls option for a worker instance in instance_map. (#18064)

Deprecations and Removals

• Remove the unstable MSC4151 implementation. The stable support remains, per Matrix 1.13. (#18052)

Internal Changes

• Increase invite rate limits (rc_invites.per_issuer) for Complement. (#18072)

Updates to locked dependencies

• Bump jinja2 from 3.1.4 to 3.1.5. (#18067)
• Bump mypy from 1.12.1 to 1.13.0. (#18083)
• Bump pillow from 11.0.0 to 11.1.0. (#18084)
• Bump pyo3 from 0.23.3 to 0.23.4. (#18079)
• Bump pyopenssl from 24.2.1 to 24.3.0. (#18062)
• Bump serde_json from 1.0.134 to 1.0.135. (#18081)
• Bump ulid from 1.1.3 to 1.1.4. (#18080)

Synapse 1.122.0 (2025-01-14)

Please note that this version of Synapse drops support for PostgreSQL 11 and 12. The minimum version of PostgreSQL supported is now version 13.

No significant changes since 1.122.0rc1.

Synapse 1.122.0rc1 (2025-01-07)

Deprecations and Removals

• Remove support for PostgreSQL 11 and 12. Contributed by @clokep. (#18034)

Features

• Added the email.tlsname config option. This allows specifying the domain name used to validate the SMTP server's TLS certificate separately from the email.smtp_host to connect to. (#17849)
• Module developers will have access to the user ID of the requester when adding check_username_for_spam callbacks to spam_checker_module_callbacks. Contributed by Wilson@Pangea.chat. (#17916)
• Add endpoints to the Admin API to fetch the number of invites the provided user has sent after a given timestamp, fetch the number of rooms the provided user has joined after a given timestamp, and get report IDs of event reports against a provided user (i.e. where the user was the sender of the reported event). (#17948)
• Support stable account suspension from MSC3823. (#17964)
• Add macaroon_secret_key_path config option. (#17983)

Bugfixes

• Fix bug when rejecting withdrew invite with a third_party_rules module, where the invite would be stuck for the client. (#17930)
• Properly purge state groups tables when purging a room with the Admin API. (#18024)
• Fix a bug preventing the admin redaction endpoint from working on messages from remote users. (#18029, #18043)

Improved Documentation

• Update synapse.app.generic_worker documentation to only recommend GET requests for stream writer routes by default, unless the worker is also configured as a stream writer. Contributed by @evoL. (#17954)
• Add documentation for the previously-undocumented last_seen_ts query parameter to the query user Admin API. (#17976)
• Improve documentation for the TaskScheduler class. (#17992)
• Fix example in reverse proxy docs to include server port. (#17994)
• Update Alpine Linux Synapse Package Maintainer within the installation instructions. (#17846)

Internal Changes

• Add RoomID & EventID rust types. (#17996)
• Fix various type errors across the codebase. (#17998)
• Disable DB statement timeout when doing a room purge since it can be quite long. (#18017)
• Remove some remaining uses of twisted.internet.defer.returnValue. Contributed by Colin Watson. (#18020)
• Refactor get_profile to no longer include fields with a value of None. (#18063)

Updates to locked dependencies

• Bump anyhow from 1.0.93 to 1.0.95. (#18012, #18045)
• Bump authlib from 1.3.2 to 1.4.0. (#18048)
• Bump dawidd6/action-download-artifact from 6 to 7. (#17981)
• Bump http from 1.1.0 to 1.2.0. (#18013)

• Bump mypy from 1.11.2 to 1.12.1. (#17999)

• Bump mypy-zope from 1.0.8 to 1.0.9. (#18047)
• Bump pillow from 10.4.0 to 11.0.0. (#18015)
• Bump pydantic from 2.9.2 to 2.10.3. (#18014)
• Bump pyicu from 2.13.1 to 2.14. (#18060)
• Bump pyo3 from 0.23.2 to 0.23.3. (#18001)
• Bump python-multipart from 0.0.16 to 0.0.18. (#17985)
• Bump sentry-sdk from 2.17.0 to 2.19.2. (#18061)
• Bump serde from 1.0.215 to 1.0.217. (#18031, #18059)
• Bump serde_json from 1.0.133 to 1.0.134. (#18044)
• Bump twine from 5.1.1 to 6.0.1. (#18049)

Changelogs for older versions can be found here.