{"cve":"CVE-2019-16226","nvd":{"published":"2019-09-11T15:15:11.420","modified":"2026-06-17T02:21:56.273","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-787"],"references":["https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20memory%20corruption%20vuln","https://github.com/TeamSeri0us/pocs/tree/master/lmdb/lmdb%20memory%20corruption%20vuln"],"products":["py-lmdb_project:py-lmdb"],"source":"nvd","synced_at":"2026-10-19T20:58:39.700375520+00:00"},"epss":{"cve":"CVE-2019-16226","score":0.01586,"percentile":0.75596,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-r8g9-w4f3-9crm","url":"https://osv.dev/vulnerability/GHSA-r8g9-w4f3-9crm","summary":"LMDB invalid write ","modified":"2024-09-30T17:01:01.981850Z","packages":[{"ecosystem":"PyPI","name":"lmdb","purl":"pkg:pypi/lmdb","ranges":["<=0.97"],"fixed":[]}]},{"id":"PYSEC-2019-238","url":"https://osv.dev/vulnerability/PYSEC-2019-238","summary":"","modified":"2026-06-10T17:02:01.584714334Z","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."]}