{"id":"CVE-2024-6854","aliases":["PYSEC-2026-1436"],"url":"https://o3.security/vulnerability/CVE-2024-6854","summary":"H2O Vulnerable to Arbitrary File Overwrite via File Export","details":"In h2oai/h2o-3 version 3.46.0, the endpoint for exporting models does not restrict the export location, allowing an attacker to export a model to any file in the server's file structure, thereby overwriting it. This vulnerability can be exploited to overwrite any file on the target server with a trained model file, although the content of the overwrite is not controllable by the attacker.","published":"2025-03-20T12:32:45Z","modified":"2026-07-07T17:57:08.535500605Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"ai.h2o:h2o-core","fixedVersion":null},{"ecosystem":"PyPI","name":"h2o","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-6854"},{"type":"PACKAGE","url":"https://github.com/h2oai/h2o-3"},{"type":"WEB","url":"https://github.com/h2oai/h2o-3/blob/a20b5b19b769866ee24b217ee78b820e64c1cd6a/h2o-core/src/main/java/hex/Model.java#L3366"},{"type":"WEB","url":"https://huntr.com/bounties/97d013f9-ac51-4c80-8dd7-8dfde11f33b2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-07T17:57:08.535500605Z"}}