GHSA-FWWW-CP23-7F5G Yamcs's WebSocket subscription handlers omit the privilege checks their REST siblings enforce

Asset / scope: Yamcs 5.12.7 WebSocket topics packets, algorithm-status, mdb-changes Summary Several WebSocket subscription handlers do not perform the privilege check that their REST counterparts enforce, so a principal subscribing over WebSocket receives data the REST API would have scoped or...

EUVD-2026-67839

Yamcs is a mission control framework. Prior to 5.12.8 and 5.13.2, Yamcs WebSocket subscription handlers fail to enforce the privileges required by equivalent REST endpoints. PacketsApi.subscribePackets exposes the packets WebSocket topic without ObjectPrivilegeType.ReadPacket,...