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fix(security): remove CSRF leak and add CSP headers #504

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fix(security): remove CSRF leak and add CSP headers #504

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8bac47b
fix(security): remove CSRF leak and add CSP headers
May 18, 2026
095c94b
fix(security): expand CSP to allow required CDNs
May 18, 2026
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10 changes: 9 additions & 1 deletion finbot/core/auth/middleware.py
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Original file line number Diff line number Diff line change
Expand Up @@ -149,7 +149,15 @@ def _add_security_headers(self, response: Response):
"""Add security headers"""
response.headers["X-Content-Type-Options"] = "nosniff"
response.headers["X-Frame-Options"] = "DENY"
response.headers["X-XSS-Protection"] = "1; mode=block"
response.headers["Referrer-Policy"] = "strict-origin-when-cross-origin"
response.headers["Content-Security-Policy"] = (
"default-src 'self'; "
"script-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com https://cdn.tailwindcss.com https://cdn.jsdelivr.net; "
"style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; "
"font-src 'self' https://fonts.gstatic.com; "
"img-src 'self' data: https://gravatar.com https://secure.gravatar.com; "
"connect-src 'self' ws: wss:;"
)


# Dependencies for FastAPI routes
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1 change: 0 additions & 1 deletion finbot/main.py
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Expand Up @@ -230,7 +230,6 @@ async def session_status(
"is_temporary": session_context.is_temporary,
"namespace": session_context.namespace,
"security_status": session_context.get_security_status(),
"csrf_token": session_context.csrf_token,
}


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