The static credentials OAuth flow currently sets scope=None, relying on
the OAuth provider's default scopes. This breaks providers like GitHub
that default to minimal/public-only access when no scope is requested.
This change reads scopes_supported from the Protected Resource Metadata
document (RFC 9728) and uses them in the authorization request. Unlike
the Authorization Server's scopes_supported (a full catalog of every
scope the AS can grant), the PRM scopes_supported represents what the
specific resource requires — making it safe to request without breaking
providers like Entra ID that reject broad scope requests.
Fixes the regression introduced in 349ea4ea where all scope handling was
removed from the static flow.
_process_picture_url validated the initial picture URL with validate_url()
but then aiohttp followed 3xx redirects without re-validating the target,
so a validate_url-passing public URL could 302 to an internal address and
the body was base64-stored in the user's profile_image_url. This is the
sixth call site of the CVE-2026-45401 redirect-bypass cohort; the other
five already pass allow_redirects=AIOHTTP_CLIENT_ALLOW_REDIRECTS. Apply
the same.
Both LDAP and OAuth registration checked user count before insert to determine whether to assign admin role. With multiple workers, concurrent first-user registrations could each see zero users and both create admin accounts.
Applies the insert-first-check-after pattern already used by signup_handler: insert with DEFAULT_USER_ROLE, then atomically check get_num_users()==1 and promote only the sole user to admin.
- URL-encodes the OAuth error message when constructing the redirect URL in the OIDC callback handler
- Without encoding, error messages containing spaces, ampersands, or other special characters produce malformed URLs that the frontend cannot parse correctly
- The custom OAuth client callback handler already correctly uses urllib.parse.quote_plus() for the same purpose; this fix brings the OIDC handler in line with that pattern
Co-authored-by: gambletan <tan@gambletan.com>
* fix: replace bare except with except Exception in main.py
* fix: replace bare except with Exception in oauth.py
In Python 3, bare 'except:' is discouraged as it catches all
SystemExit and KeyboardInterrupt exceptions. Changed to 'except Exception:'
to only catch actual exceptions.
