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Exempt /auth/oauth/ from platform CSRF (MCP connector DCR/token) #14

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Merged
thorwhalen merged 1 commit into from
Jun 27, 2026
Merged

Exempt /auth/oauth/ from platform CSRF (MCP connector DCR/token) #14

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6 changes: 6 additions & 0 deletions enlace_auth/plugin.py
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Original file line number Diff line number Diff line change
Expand Up @@ -336,6 +336,12 @@ def wire(parent: "FastAPI", config) -> None:
# proxy to a black-box upstream that can't participate in enlace's
# double-submit flow, so their entire mount prefix must also be exempt.
csrf_exempt = ["/auth/callback", "/auth/login/", "/api/"]
if auth_cfg.oauth_server.enabled:
# OAuth 2.1 server endpoints: /register + /token are cookieless
# machine-to-machine calls (protected by PKCE + client validation), and
# the consent POST carries its own signed CSRF token — so the platform's
# double-submit CSRF must not gate them.
csrf_exempt.append("/auth/oauth/")
for app in getattr(config, "apps", []):
if getattr(app, "mode", "asgi") in ("process", "external"):
prefix = app.route_prefix
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