raptor_xml_writer_start_element_common in raptor_xml_writer.c in Raptor RDF Syntax Library 2.0.15 miscalculates the maximum nspace declarations for the XML writer, leading to heap-based buffer overflows (sometimes seen in raptor_qname_format_as_xml).
Exploitability
AV:NAC:LPR:NUI:RScope
S:UImpact
C:NI:LA:H7.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H