{"id":"CVE-2024-8616","aliases":["GHSA-g48v-3p35-88jr","PYSEC-2026-1441"],"title":"H2O Vulnerable to Arbitrary File Overwrite","summary":"H2O Vulnerable to Arbitrary File Overwrite","severity":"high","cvss":8.2,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H","vendor":"h2o","product":"h2o","ecosystem":"pip","affected":["h2o >= 3.10.4.1, <= 3.46.0","ai.h2o:h2o-core >= 3.10.4.1, <= 3.46.0"],"published":"2025-03-20","updated":"2026-07-07","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-g48v-3p35-88jr","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-8616"},{"url":"https://github.com/h2oai/h2o-3"},{"url":"https://github.com/h2oai/h2o-3/blob/088190f9d0370a02a483fca68d8dc89c996b4f83/h2o-core/src/main/java/water/api/ModelsHandler.java#L310"},{"url":"https://huntr.com/bounties/aebf69a5-b9b1-4d2f-a8ff-902c11a8c97a"}],"tags":["osv","pip"],"epss":0.00546,"epssPercentile":0.44449,"ingestedAt":"2026-07-08T18:25:49.213Z","slug":"CVE-2024-8616","body":"## Overview\n\nIn 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.\n\n## Affected packages\n\n- `h2o >= 3.10.4.1, <= 3.46.0`\n- `ai.h2o:h2o-core >= 3.10.4.1, <= 3.46.0`\n\n## Remediation\n\nRefer to the advisory for the patched release.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":45.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}