{"cve":"CVE-2019-16227","nvd":{"published":"2019-09-11T15:15:11.513","modified":"2026-06-17T02:21:56.420","status":"Modified","description":"An issue was discovered in py-lmdb 0.97. For certain values of mn_flags, mdb_cursor_set triggers a memcpy with an invalid write operation within mdb_xcursor_init1. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-787"],"references":["https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20memcpy%20illegal%20dst","https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20memcpy%20illegal%20dst"],"products":["py-lmdb_project:py-lmdb"],"source":"nvd","synced_at":"2026-10-19T20:58:39.700375520+00:00"},"epss":{"cve":"CVE-2019-16227","score":0.02044,"percentile":0.81174,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-pf3p-v9xp-mrvf","url":"https://osv.dev/vulnerability/GHSA-pf3p-v9xp-mrvf","summary":"py-lmdb Invalid write operation","modified":"2024-09-30T17:04:57.039914Z","packages":[{"ecosystem":"PyPI","name":"lmdb","purl":"pkg:pypi/lmdb","ranges":["<=0.97"],"fixed":[]}]},{"id":"PYSEC-2019-239","url":"https://osv.dev/vulnerability/PYSEC-2019-239","summary":"","modified":"2026-06-10T17:00:11.827334632Z","packages":[{"ecosystem":"PyPI","name":"lmdb","purl":"pkg:pypi/lmdb","ranges":["<0.98"],"fixed":["0.98"]}]}],"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."]}