{"id":"CVE-2024-8616","aliases":["EUVD-2025-6902","GHSA-g48v-3p35-88jr","PYSEC-2026-1441"],"status":"published","title":"Arbitrary File Overwrite in h2oai/h2o-3","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","severity":{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00557,"percentile":0.46712,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-73"],"published":"2025-03-20T10:10:20Z","modified":"2026-07-07T17:56:21Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.4.1"},{"last_affected":"3.46.0"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"ai.h2o:h2o-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.4.1"},{"last_affected":"3.46.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.4.1"},{"last_affected":"3.46.0"}]}],"versions":["3.10.4.1","3.10.4.2","3.10.4.3","3.10.4.4","3.10.4.6","3.10.4.8","3.16.0.1","3.16.0.2","3.16.0.3","3.16.0.4","3.18.0.1","3.18.0.10","3.18.0.11","3.18.0.2","3.18.0.3","3.18.0.4","3.18.0.5","3.18.0.6","3.18.0.7","3.18.0.8","3.18.0.9","3.20.0.4","3.20.0.5","3.20.0.6","3.20.0.7","3.20.0.8","3.22.0.1","3.22.0.2","3.22.0.3","3.22.0.4","3.22.0.5","3.22.1.1","3.22.1.2","3.22.1.3","3.22.1.4","3.22.1.5","3.22.1.6","3.24.0.1","3.24.0.2","3.24.0.3","3.24.0.4","3.24.0.5","3.26.0.1","3.26.0.10","3.26.0.11","3.26.0.2","3.26.0.3","3.26.0.4","3.26.0.5","3.26.0.6","3.26.0.8","3.26.0.9","3.28.0.1","3.28.0.2","3.28.0.3","3.28.1.2","3.28.1.3","3.30.0.1","3.30.0.2","3.30.0.3","3.30.0.4","3.30.0.5","3.30.0.6","3.30.0.7","3.30.1.1","3.30.1.2","3.30.1.3","3.32.0.2","3.32.0.3","3.32.0.4","3.32.0.5","3.32.1.1","3.32.1.2","3.32.1.3","3.32.1.4","3.32.1.5","3.32.1.6","3.32.1.7","3.34.0.3","3.34.0.7","3.34.0.8","3.36.0.2","3.36.0.3","3.36.0.4","3.36.1.1","3.36.1.2","3.36.1.3","3.36.1.4","3.36.1.5","3.38.0.1","3.38.0.2","3.38.0.3","3.38.0.4","3.40.0.1","3.40.0.2","3.40.0.3","3.40.0.4","3.42.0.1","3.42.0.2","3.42.0.3","3.42.0.4","3.44.0.1","3.44.0.2","3.44.0.3"]},{"source":"osv","ecosystem":"Maven","package":"ai.h2o:h2o-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.4.1"},{"last_affected":"3.46.0"}]}],"versions":["3.10.4.1","3.10.4.11","3.10.4.12","3.10.4.2","3.10.4.3","3.10.4.4","3.10.4.5","3.10.4.6","3.10.4.7","3.10.4.8","3.10.4.9","3.10.5.1","3.10.5.2","3.10.5.3","3.10.5.4","3.12.0.1","3.14.0.1","3.14.0.2","3.14.0.3","3.14.0.4","3.14.0.5","3.14.0.6","3.14.0.7","3.16.0.1","3.16.0.10","3.16.0.11","3.16.0.12","3.16.0.2","3.16.0.3","3.16.0.4","3.16.0.5","3.16.0.6","3.16.0.7","3.16.0.8","3.16.0.9","3.18.0.1","3.18.0.10","3.18.0.11","3.18.0.2","3.18.0.3","3.18.0.4","3.18.0.5","3.18.0.6","3.18.0.7","3.18.0.8","3.18.0.9","3.20.0.1","3.20.0.10","3.20.0.2","3.20.0.3","3.20.0.4","3.20.0.5","3.20.0.6","3.20.0.7","3.20.0.8","3.20.0.9","3.22.0.1","3.22.0.2","3.22.0.3","3.22.0.4","3.22.0.5","3.22.1.1","3.22.1.2","3.22.1.3","3.22.1.4","3.22.1.5","3.22.1.6","3.24.0.1","3.24.0.2","3.24.0.3","3.24.0.4","3.24.0.5","3.26.0.1","3.26.0.10","3.26.0.11","3.26.0.2","3.26.0.3","3.26.0.4","3.26.0.5","3.26.0.6","3.26.0.8","3.26.0.9","3.28.0.1","3.28.0.2","3.28.0.3","3.28.0.4","3.28.1.1","3.28.1.2","3.28.1.3","3.30.0.1","3.30.0.2","3.30.0.3","3.30.0.4","3.30.0.5","3.30.0.6","3.30.0.7","3.30.1.1","3.30.1.2","3.30.1.3","3.32.0.1","3.32.0.2","3.32.0.3","3.32.0.4","3.32.0.5","3.32.1.1","3.32.1.2","3.32.1.3","3.32.1.4","3.32.1.5","3.32.1.6","3.32.1.7","3.34.0.1","3.34.0.3","3.34.0.4","3.34.0.5","3.34.0.6","3.34.0.7","3.34.0.8","3.35.0.2","3.36.0.1","3.36.0.2","3.36.0.3","3.36.0.4","3.36.1.1","3.36.1.2","3.36.1.3","3.36.1.4","3.36.1.5","3.38.0.1","3.38.0.2","3.38.0.3","3.38.0.4","3.40.0.1","3.40.0.2","3.40.0.3","3.40.0.4","3.42.0.1","3.42.0.2","3.42.0.3","3.42.0.4","3.44.0.1","3.44.0.2","3.44.0.3"]},{"source":"osv","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.10.4.1"},{"last_affected":"3.46.0"}]}],"versions":["3.10.4.1","3.10.4.2","3.10.4.3","3.10.4.4","3.10.4.6","3.10.4.8","3.16.0.1","3.16.0.2","3.16.0.3","3.16.0.4","3.18.0.1","3.18.0.10","3.18.0.11","3.18.0.2","3.18.0.3","3.18.0.4","3.18.0.5","3.18.0.6","3.18.0.7","3.18.0.8","3.18.0.9","3.20.0.4","3.20.0.5","3.20.0.6","3.20.0.7","3.20.0.8","3.22.0.1","3.22.0.2","3.22.0.3","3.22.0.4","3.22.0.5","3.22.1.1","3.22.1.2","3.22.1.3","3.22.1.4","3.22.1.5","3.22.1.6","3.24.0.1","3.24.0.2","3.24.0.3","3.24.0.4","3.24.0.5","3.26.0.1","3.26.0.10","3.26.0.11","3.26.0.2","3.26.0.3","3.26.0.4","3.26.0.5","3.26.0.6","3.26.0.8","3.26.0.9","3.28.0.1","3.28.0.2","3.28.0.3","3.28.1.2","3.28.1.3","3.30.0.1","3.30.0.2","3.30.0.3","3.30.0.4","3.30.0.5","3.30.0.6","3.30.0.7","3.30.1.1","3.30.1.2","3.30.1.3","3.32.0.2","3.32.0.3","3.32.0.4","3.32.0.5","3.32.1.1","3.32.1.2","3.32.1.3","3.32.1.4","3.32.1.5","3.32.1.6","3.32.1.7","3.34.0.3","3.34.0.7","3.34.0.8","3.36.0.2","3.36.0.3","3.36.0.4","3.36.1.1","3.36.1.2","3.36.1.3","3.36.1.4","3.36.1.5","3.38.0.1","3.38.0.2","3.38.0.3","3.38.0.4","3.40.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Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-8616","tags":["advisory"]},{"url":"https://github.com/h2oai/h2o-3/blob/088190f9d0370a02a483fca68d8dc89c996b4f83/h2o-core/src/main/java/water/api/ModelsHandler.java#L310","tags":["web"]},{"url":"https://github.com/advisories/GHSA-g48v-3p35-88jr","tags":["advisory"]},{"url":"https://github.com/h2oai/h2o-3","tags":["package"]},{"url":"https://pypi.org/project/h2o","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-8616","title":"Arbitrary File Overwrite in h2oai/h2o-3","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","status":"published","published":"2025-03-20T10:10:20.48Z","modified":"2025-03-20T18:23:06.601Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:34:09.540667Z"}],"euvd":[{"id":"EUVD-2025-6902","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","status":"published","published":"2025-03-20T10:10:20Z","modified":"2025-03-20T18:23:06Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:57.377828Z"}],"ghsa":[{"id":"GHSA-g48v-3p35-88jr","title":"H2O Vulnerable to Arbitrary File Overwrite","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","status":"published","published":"2025-03-20T12:32:48Z","modified":"2025-03-20T20:31:10Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:38:35.74197Z"}],"nvd":[{"id":"CVE-2024-8616","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","status":"published","published":"2025-03-20T10:15:43.59Z","modified":"2026-06-17T08:22:59.183Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T14:10:45.815983Z"}],"osv":[{"id":"GHSA-g48v-3p35-88jr","title":"H2O Vulnerable to Arbitrary File Overwrite","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","status":"published","published":"2025-03-20T12:32:48Z","modified":"2026-07-07T17:56:21.85893776Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"cwes":["CWE-73"],"updated_at":"2026-11-02T15:46:47.119724Z"},{"id":"PYSEC-2026-1441","title":"H2O Vulnerable to Arbitrary File Overwrite","description":"In h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability arises from the `exportModelDetails` function in `ModelsHandler.java`, where the user-controllable `mexport.dir` parameter is used to specify the file path for writing model details. This can lead to overwriting files at arbitrary locations on the host system.","status":"published","published":"2026-07-07T14:34:57.173944Z","modified":"2026-07-07T17:46:12.517317926Z","cvss":[{"version":"3.0","score":8.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:54.622769Z"}]}}