{"id":"CVE-2019-16226","aliases":["GHSA-r8g9-w4f3-9crm","PYSEC-2019-238"],"url":"https://o3.security/vulnerability/CVE-2019-16226","summary":"LMDB invalid write ","details":"An issue was discovered in py-lmdb 0.97. mdb_node_del does not validate a memmove in the case of an unexpected node->mn_hi, leading to an invalid write operation. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.","published":"2019-09-11T15:15:11.420Z","modified":"2026-07-08T17:16:54.198390Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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%20memory%20corruption%20vuln"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T17:16:54.198390Z"}}