{"id":"CVE-2019-16224","aliases":["GHSA-9q62-r72g-pvv7","PYSEC-2019-236"],"url":"https://o3.security/vulnerability/CVE-2019-16224","summary":"py-lmdb Invalid write operation","details":"An issue was discovered in py-lmdb 0.97. For certain values of md_flags, mdb_node_add does not properly set up a memcpy destination, leading to an invalid write operation. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.","published":"2019-09-11T15:15:11.263Z","modified":"2026-07-08T17:16:54.587630Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"lmdb","fixedVersion":null}],"fix":null,"references":[{"type":"EVIDENCE","url":"https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20initialization%20vuln"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T17:16:54.587630Z"}}