CVE-2026-42083

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, PCF NpcfSMPolicyControl missing authentication middleware allows unauthenticated access to SM policy handlers and disclosure of subscriber SUPI. In NewServer, the smPolicyGroup route group is created and routes are...

EUVD-2026-32554

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the free5GC UDM component fails to validate the supi path parameter in six GET handlers of the nudm-sdm Subscriber Data Management service. An unauthenticated attacker can inject control characters into the SUPI...

CVE-2026-42459 free5GC: Improper Input Validation and Generation of Error Message Containing Sensitive Information in github.com/free5gc/udm

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, the free5GC UDM component fails to validate the supi path parameter in six GET handlers of the nudm-sdm Subscriber Data Management service. An unauthenticated attacker can inject control characters into the SUPI...

GHSA-6RGM-GR97-X3J5 Free5GC PCF: Missing authentication middleware in Npcf_SMPolicyControl allows access to SM policy handlers and disclosure of subscriber SUPI

Summary PCF NpcfSMPolicyControl missing authentication middleware allows unauthenticated access to SM policy handlers and disclosure of subscriber SUPI Details In NewServer, the smPolicyGroup route group is created and routes are applied without attaching the router authorization middleware. In...

PT-2026-38368

Name of the Vulnerable Software and Affected Versions free5GC versions prior to 4.2.2 Description The PCF Npcf SMPolicyControl service lacks authentication middleware in the NewServer function, where the smPolicyGroup route group is created without attaching the RouterAuthorizationCheck middlewar...

CVE-2026-40245

CVE-2026-40245 concerns Free5GC’s UDR service (versions 4.2.1 and below) where an information disclosure occurs via the 5G SBI endpoint GET /nudr-dr/v2/application-data/influenceData/subs-to-notify. When required query parameters are missing, the handler returns a 400 but does not stop execution,...

EUVD-2026-7463

free5gc UDM provides Unified Data Management UDM for free5GC, an open-source project for 5th generation 5G mobile core networks. In versions up to and including 1.4.1, remote attackers can inject control characters e.g., %00 into the supi parameter, triggering internal URL parsing errors net/url:...