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Security: Prevent cross-tenant data exposure and credentialed public … - #3

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Security: Prevent cross-tenant data exposure and credentialed public …#3
mozluk wants to merge 1 commit into
sapiom:mainfrom
mozluk:mozluk-patch-1

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@mozluk

@mozluk mozluk commented Aug 16, 2026

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…fetch

This PR secures the live-data fetching endpoint against unauthorized access and data leakage. Previously, the endpoint lacked session validation, utilized wildcard CORS (*), and exposed sensitive user context in API responses, allowing attackers to retrieve user-specific connector data and force server-side fetches.

Session Enforcement & Ownership: Added strict session validation (validateSession) to app/api/live/data/[userId]/[slug]/route.ts. The route now mandates that the caller must own the requested data plan (authenticatedUserId === userId).

CORS Restriction: Removed Access-Control-Allow-Origin: '*' from the API route headers. CORS is now strictly limited to approved origins defined in ALLOWED_ORIGINS (e.g., the local app origin).

Data Masking: Updated lib/live-data-executor.ts to redact the userContext property from the returned DataAPIResponse object, ensuring sensitive configuration data is not leaked to the client.

…fetch

This PR secures the live-data fetching endpoint against unauthorized access and data leakage. Previously, the endpoint lacked session validation, utilized wildcard CORS (*), and exposed sensitive user context in API responses, allowing attackers to retrieve user-specific connector data and force server-side fetches.

Session Enforcement & Ownership: Added strict session validation (validateSession) to app/api/live/data/[userId]/[slug]/route.ts. The route now mandates that the caller must own the requested data plan (authenticatedUserId === userId).

CORS Restriction: Removed Access-Control-Allow-Origin: '*' from the API route headers. CORS is now strictly limited to approved origins defined in ALLOWED_ORIGINS (e.g., the local app origin).

Data Masking: Updated lib/live-data-executor.ts to redact the userContext property from the returned DataAPIResponse object, ensuring sensitive configuration data is not leaked to the client.
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