element-hq/synapse

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Synapse: Matrix homeserver written in Python/Twisted + Rust

Stars: 4.6k
Forks: 600
Open beginner issues: 0
Indexed issues: 1.9k
Avg merge: 5d 6h
Merged PRs (30d): 46

Dominant language: Python
License: AGPL-3.0
Last GitHub push: Sep 14, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: good first issue

Open All

1882 open issues indexed

Purge API - add option to purge only redacted messages from database Open

T-Enhancement z-p2

element-hq/synapse#4016 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
we call the spam-checker multiple times for the same event Open

A-Federation A-Modules T-Defect z-p2

element-hq/synapse#4071 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Synapse fails to talk to appservices that listen on an IPv6 address. Open

A-Application-Service O-Uncommon S-Minor T-Defect Z-Upstream-Bug

element-hq/synapse#4092 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`filter_events_for_server` takes a lot of DB time, and is wrong for state events Open

A-Performance O-Uncommon S-Minor T-Defect

element-hq/synapse#4094 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Create profiles for appservice users on the fly if needed Open

A-Application-Service A-Profiles O-Uncommon S-Minor T-Defect

element-hq/synapse#4143 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Can't join a room as a guest if email is a required 3pid for registration Open

A-Guests A-Join O-Frequent S-Major T-Defect z-bug z-p2

element-hq/synapse#4146 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Access tokens are not invalidated when credentials are invalidated via an external auth provider Open

Security T-Enhancement z-p2

element-hq/synapse#4158 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Third Party Lookups: the returned protocol instance icons are not Matrix Content URIs Open

A-Spec-Compliance good first issue S-Minor T-Defect

element-hq/synapse#4175 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
very slow inserts into event_search Open

A-Message-Search A-Performance A-Search O-Uncommon S-Major T-Enhancement

element-hq/synapse#4219 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Impossible to run a history purge on large rooms without having synapse fall over Open

A-Moderation T-Defect z-bug z-p2

element-hq/synapse#4228 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
peeking doesn't work over federation Open

A-Spec-Compliance O-Occasional S-Minor T-Defect T-Enhancement

element-hq/synapse#4236 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Lazy loading: LL members events should not be sent in both state and in the timeline Open

A-Lazy-Loading T-Enhancement

element-hq/synapse#4237 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
PushersRemoveRestServlet destroys pushers on a GET, potentially performed by a browser or antivirus Open

T-Enhancement Z-Help-Wanted z-p2

element-hq/synapse#4249 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Inviting 3pids to a room where you don't have permission to invite sends an email that won't work Open

A-3PID A-Invite O-Uncommon S-Tolerable T-Defect

element-hq/synapse#4269 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
make media download timeout configurable Open

A-Media-Repository T-Enhancement

element-hq/synapse#4301 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Appservices are not queried for users during profile requests Open

A-Application-Service T-Enhancement

element-hq/synapse#4310 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
First invitation over federation to a room fails with a 403, second works Open

A-Invite A-Room-Upgrades O-Uncommon S-Minor T-Defect

element-hq/synapse#4345 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Consider picking the middle frame for thumbnailing gifs Open

A-Media-Repository T-Enhancement

element-hq/synapse#4347 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
"InviteState" in sync response has inconsistent contents Open

A-Spec-Compliance S-Minor T-Defect

element-hq/synapse#4363 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Key upload seems slow on matrix.org Open

A-E2EE A-Performance T-Enhancement

element-hq/synapse#4395 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Ability to disable End-To-End Encryption via Config Open

A-Config A-E2EE T-Enhancement

element-hq/synapse#4401 · 2 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
Emotes aren't rendered correctly in email notifs Open

A-Email-Push O-Uncommon S-Minor T-Defect

element-hq/synapse#4416 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Docs missing from debian package Open

A-Docs A-Packaging T-Enhancement z-p3

element-hq/synapse#4438 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
debian package runs synapse as nogroup Open

A-Packaging O-Uncommon S-Minor T-Defect z-p3

element-hq/synapse#4439 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
register_new_matrix_user doesn't read config file in debian package Open

A-Packaging O-Frequent S-Minor T-Enhancement z-p3

element-hq/synapse#4442 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Reduce/remove rate limiting on rejecting invites. Open

A-Invite T-Enhancement z-feature

element-hq/synapse#4463 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Consent listener activated but lack of user_consent section does not stop the homeserver or prevent it from starting Open

A-Config O-Uncommon S-Tolerable T-Defect z-bug

element-hq/synapse#4502 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Report suspicious login attempts Open

T-Enhancement z-feature z-p2

element-hq/synapse#4556 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
500 error when trying to rejoin empty room Open

A-Federated-Join A-Workers O-Uncommon S-Major T-Defect z-bug

element-hq/synapse#4582 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
UnicodeDecodeError traceback on URL preview Open

A-URL-Preview O-Uncommon S-Minor T-Defect z-bug Z-Help-Wanted z-p2

element-hq/synapse#4585 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Migration concept / data import from other chats (HipChat, Mattermost, ...) Open

T-Enhancement z-feature z-p2

element-hq/synapse#4590 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Send ETag header on media repo responses Open

A-Media-Repository O-Frequent S-Minor T-Enhancement

element-hq/synapse#4637 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Change `initial_device_display_name` param special case? Open

T-Enhancement

element-hq/synapse#4638 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Errors during init get lost in the logs Open

A-Logging O-Uncommon S-Minor T-Defect z-p2

element-hq/synapse#4641 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Gathering performance data of synapse deployments Open

A-Metrics A-Performance T-Other Z-Help-Wanted z-p3

element-hq/synapse#4659 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
500 error when attempting to accept invite from unreachable server Open

A-Federation A-Invite A-Validation O-Uncommon S-Minor T-Defect

element-hq/synapse#4665 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
if you join a room without shared history visibility, you see LL members as joins Open

A-Lazy-Loading A-Sync O-Frequent S-Minor T-Defect z-bug z-p2

element-hq/synapse#4697 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Changes of displayname from auth providers are not reflected in synapse Open

S-Minor T-Enhancement Z-Help-Wanted

element-hq/synapse#4708 · 0 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Setting a canonical alias to `alias: null` results in 2 events Open

A-Spec-Compliance O-Uncommon S-Tolerable T-Defect z-bug z-p2

element-hq/synapse#4711 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Image pre- or post-processing Open

A-Media-Repository O-Occasional S-Tolerable T-Enhancement

element-hq/synapse#4724 · 1 comment · 3 reactions · 0 assignees · Indexed Sep 15, 2026
Leaving a room can cause you to be hammered with GET /event requests from other servers Open

A-Federation A-Performance O-Uncommon S-Tolerable T-Defect

element-hq/synapse#4726 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Unhandled Error: doWrite called on a twisted.internet.udp.Port Open

S-Minor T-Defect

element-hq/synapse#4727 · 2 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
/join fails with 500 if remote server times out Open

A-Federated-Join T-Enhancement z-p2

element-hq/synapse#4755 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Media handler does not support HTTP range requests Open

good first issue P4 S-Minor T-Defect

element-hq/synapse#4780 · 10 comments · 4 reactions · 0 assignees · Indexed Sep 15, 2026
Disinviting users over federation doesn't work Open

A-Federation A-Invite O-Uncommon S-Minor T-Defect

element-hq/synapse#4808 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Disable `send_federation` on main process when `federation_sender` worker connects Open

A-Federation T-Enhancement z-p4

element-hq/synapse#4809 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Bring matrix-org-hotfixes changes into mainline Open

O-Occasional S-Minor T-Task Z-Help-Wanted

element-hq/synapse#4826 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
make prometheus_client (and possibly other metric related dependencies) optional if metrics are disabled Open

A-Metrics T-Enhancement z-bug z-p2

element-hq/synapse#4845 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Not whitelisting federation with matrix.org causes errors when fetching keys Open

A-Federation A-Invite T-Defect

element-hq/synapse#4856 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
We should give a better error message when a join-over-federation request is rejected by the remote server Open

A-Federated-Join A-Federation T-Enhancement z-p2

element-hq/synapse#4858 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

element-hq/synapse

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