Notion, Linear, Atlassian, Sentry, Asana and Stripe no longer open the
MCP server form. The wizard shows one "Sign in to Notion" button: the
pop-up opens inside the click (so browsers allow it), follows the
worker's mcp.oauth events to the provider, and the tool is saved on
success with its actions on the done step. Reconnecting a preset uses
the same flow, as do the chat bar and the health toast.
Saving an OAuth MCP server without a new handshake now uses the stored
sign-in instead of failing, and the custom MCP form keeps scopes and
timeout under Show advanced.
A connector's enabled switch is now optional: unset means on when the
connector has the server settings it needs, so Google Drive, SharePoint
and Confluence start off until their OAuth settings are present, and an
admin's explicit switch always wins. Changing only the sharing mode no
longer switches a connector on.
Members only see connectors they can use. The catalog, Add Source tiles
and Add Tool leave out anything turned off or still needing setup, except
a connector a member already has a connection to, which stays listed as
turned off so it can be managed or removed.
- Guides > Connectors: using connections, sharing modes, attribution,
and admin setup (encryption key and rotation, redirect URIs, Google
Drive, SharePoint, Confluence, S3, MCP presets).
- Integration pages register CONNECTOR_REDIRECT_BASE_URI as-is; the
?provider= suffix never matched what the backend sends.
VITE_GOOGLE_CLIENT_ID is optional.
- Upgrading: set ENCRYPTION_SECRET_KEY before migrating multi-user installs.
The connector OAuth popup posted the session token to window.opener with
a '*' target origin, so any page that opened the popup received it. An
attacker with an account on a multi-user deployment could start a flow for
their own pending session, get a victim to finish the provider consent, and
receive a token backed by the victim's Drive/SharePoint/Confluence tokens.
- Post popup results only to allowed frontend origins: the callback origin,
OIDC_FRONTEND_URL, the new CONNECTOR_ALLOWED_ORIGINS, and localhost:5173
when the callback runs on a loopback host.
- Render the success page from the callback itself so the token never
appears in a URL; callback-status ignores session_token/user_email params.
- ConnectorAuth accepts messages only from the popup it opened, on the
callback origin reported by /api/connectors/auth.
- /api/connectors/disconnect requires auth and only deletes the caller's
session.
- /api/connectors/sync and /api/remote reject session tokens the caller
does not own.
Fixes#2766
arc53-machine