{"id":"CVE-2019-16228","aliases":["GHSA-ggwq-vrgp-6gv4","PYSEC-2019-240"],"url":"https://o3.security/vulnerability/CVE-2019-16228","summary":"py-lmdb Divide by Zero interruptions","details":"An issue was discovered in py-lmdb 0.97. There is a divide-by-zero error in the function mdb_env_open2 if mdb_env_read_header obtains a zero value for a certain size field. NOTE: this outcome occurs when accessing a data.mdb file supplied by an attacker.","published":"2019-09-11T15:15:11.577Z","modified":"2026-07-08T20:57:13.169785Z","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":{"score":0.01786,"percentile":0.76293,"asOf":"2026-08-23"},"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/FPE"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16228"},{"type":"PACKAGE","url":"https://github.com/jnwatson/py-lmdb"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/lmdb/PYSEC-2019-240.yaml"},{"type":"WEB","url":"https://pypi.org/project/lmdb"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:57:13.169785Z"}}