{"cve":"CVE-2017-18926","nvd":{"published":"2020-11-06T18:15:11.967","modified":"2026-06-17T01:13:50.800","status":"Modified","description":"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).","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H","score":7.1},"cwes":["CWE-787"],"references":["http://www.openwall.com/lists/oss-security/2020/11/13/1","http://www.openwall.com/lists/oss-security/2020/11/13/2","http://www.openwall.com/lists/oss-security/2020/11/14/2","http://www.openwall.com/lists/oss-security/2020/11/16/2","http://www.openwall.com/lists/oss-security/2020/11/16/3"],"products":["debian:debian_linux","fedoraproject:fedora","librdf:raptor_rdf_syntax_library"],"source":"nvd","synced_at":"2026-10-19T21:11:20.317016139+00:00"},"epss":{"cve":"CVE-2017-18926","score":0.03117,"percentile":0.87819,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}