Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, "UpsertWorkspaceApp" overwrites an existing app's "agent_id" on a primary-key conflict and "insertAgentApp" accepts the app ID from the provisioner's "CompleteJob" payload without verifying it belongs to the workspace being built. "CompleteJob" runs under "dbauthz.AsProvisionerd" so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing "workspace_apps" row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available.