CVE-2026-44325 free5GC: NRF POST /oauth2/token structured-form parser type-confusion panic family (Reflect.Set on incompatible types)

free5GC is an open-source implementation of the 5G core network. Prior to 4.2.2, free5GC's NRF root SBI endpoint POST /oauth2/token contains a parser-level type-confusion bug family. The handler in NFs/nrf/internal/sbi/apiaccesstoken.go reflects over models.NrfAccessTokenAccessTokenReq,...

CVE-2026-44325

CVE-2026-44325 affects free5GC NRF (v4.2.1) where POST /oauth2/token parses form data with a reflective type-confusion in api_accesstoken.go. The handler reflects over NrfAccessTokenAccessTokenReq, incorrectly treating most fields as a *models.PlmnId and assigns it to various destination fields, ...