I have email to CVE for cancel the CVE-2018-15889, sorry again.
I'm sorry to reply so late. I download the podofo from sourceforge,but unfortunately, the code was not patched in PdfVecObjects::Reserve( size_t size ) , so it's duplicate to CVE-2018-5783...
podofo 0.9.6 error handle pdf in PoDoFo::PdfVecObjects::Reserve()