free5GC UDR has improper `ueId` validation in EE subscription handlers that allows arbitrary identifier persistence

Summary The free5GC UDR accepts arbitrary non-3GPP ueId values in the EE subscription creation and query flows because the regular expression used for validation ends with the catch-all alternative |.+. This causes the validation logic to accept any non-empty string rather than restricting input ...

PT-2026-48680

Name of the Vulnerable Software and Affected Versions free5GC UDR affected versions not specified Description Improper input validation exists in the EE subscription handlers of the free5GC UDR. The system uses a regular expression to validate the ueId variable that includes a catch-all...