CVE-2026-119329: Immich: Partner "view-only" sharing leaks GPS coordinates of the sharer's archived assets via GET /api/map/markers

Immich is a high-performance self-hosted photo and video management solution. Prior to 3.0.0, GET /api/map/markers used server/src/services/map.service.ts to add partner owner identifiers when withPartners=true, while server/src/repositories/map.repository.ts applied Archive visibility to every selected owner when isArchived=true. A view-only partner could therefore enumerate the GPS coordinates and existence of a sharer's archived photos or videos even though the timeline and direct-access paths exclude archived partner assets. The exposure is limited to location metadata and asset identifiers because image bytes remain protected by checkPartnerAccess. This issue is fixed in version 3.0.0.