fix(wand): validate session before allowing access to wand generation

[waleedlatif1]

Summary

• validate session before allowing access to wand generation, disallowing unauthorized access to wand endpoint

Type of Change

• Bug fix

Testing

Tested manually

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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1 Skipped Deployment

Project	Deployment	Review	Updated (UTC)
docs	Skipped		Dec 15, 2025 8:20pm

[greptile-apps]

Greptile Overview

Greptile Summary

Added session validation at the start of the wand generation endpoint to prevent unauthorized access. When a workflowId is provided, the code now verifies workspace membership for workspace-owned workflows.

Key changes:

• Session authentication now required before any wand generation
• Workspace membership verification added for workflows belonging to workspaces (admin or write access required)
• Proper error responses for unauthorized attempts (401) and insufficient permissions (403)

Issue: Personal workflows (those without a workspaceId) are not checking ownership against the workflow's userId field. Any authenticated user can generate wand content and bill it to another user's personal workflow.

Confidence Score: 2/5

• This PR introduces session validation but has a critical authorization gap for personal workflows
• While the PR successfully adds session validation and workspace authorization, it leaves personal workflows (those without a workspaceId) completely unprotected. Any authenticated user can access and bill wand generation to someone else's personal workflow by simply providing that workflowId. This is a security vulnerability that allows unauthorized resource consumption and billing.
• apps/sim/app/api/wand/route.ts requires immediate attention to add personal workflow ownership verification

Important Files Changed

File Analysis

Filename	Score	Overview
apps/sim/app/api/wand/route.ts	4/5	Added session validation and workspace membership verification for wand generation endpoint, preventing unauthorized access

Sequence Diagram

sequenceDiagram
participant C as Client
participant W as Wand Endpoint
participant S as Session Check
participant D as DB Query
participant P as Permission Check
participant A as AI Provider
C->>W: POST request
W->>S: Check authentication
alt Not authenticated
S-->>W: No session
W-->>C: 401 Error
else Authenticated
S-->>W: User authenticated
W->>W: Validate request
opt Has workflowId
W->>D: Fetch workflow
alt Not found
D-->>W: None
W-->>C: 404 Error
else Found
D-->>W: Workflow data
opt Has workspace
W->>P: Verify access
alt No access
P-->>W: Denied
W-->>C: 403 Error
else Has access
P-->>W: Granted
end
end
end
end
W->>A: Request generation
A-->>W: Response
opt workflowId exists
W->>D: Update billing
end
W-->>C: 200 Success
end

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[greptile-apps]

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[waleedlatif1]

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