CVE-2026-47659: Pathling has path traversal in $import-pnp manifest that enables read-capable SSRF via /jobs/{jobId}/{filename}

Pathling is a set of tools that make it easier to use FHIR and clinical terminology within health data analytics. Prior to version 2.0.0 of Pathling Server, Pathling's /$result endpoint allows a caller who can obtain any valid async export job ID to supply file parameter values containing path traversal sequences. The handler verifies only the supplied job and never normalises or confines the requested file path to that job's jobs/<jobId> directory before opening it as a filesystem resource. Because async export scratch space lives under the same warehouse database root as persisted resource tables, an attacker can use their own export job to read other files from the warehouse. This is fixed in Pathling Server 2.0.0. The $result handler now resolves and canonicalizes the requested file path and rejects any request that escapes the job's jobs/<jobId> directory. As an interim mitigation, disable the async export operations (pathling.operations.exportEnabled, patientExportEnabled, groupExportEnabled, bulkSubmitEnabled) or enable authentication and restrict export capability to trusted callers.