{"id":"CVE-2024-7765","aliases":["EUVD-2025-6953","GHSA-6w62-3jvj-mfj6","PYSEC-2026-1439"],"status":"published","title":"Denial of Service in h2oai/h2o-3","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00779,"percentile":0.5616,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-409"],"published":"2025-03-20T10:08:46Z","modified":"2026-10-28T02:31:10Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.32.1.2"},{"last_affected":"3.46.0.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"ai.h2o:h2o-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.32.1.2"},{"last_affected":"3.46.0.2"}]}]},{"source":"osv","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.32.1.2"},{"last_affected":"3.46.0.2"}]}],"versions":["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","3.46.0.1","3.46.0.2"]},{"source":"osv","ecosystem":"Maven","package":"ai.h2o:h2o-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.32.1.2"},{"last_affected":"3.46.0.2"}]}],"versions":["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","3.46.0.1","3.46.0.2"]},{"source":"osv","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.32.1.2"},{"last_affected":"3.46.0.2"}]}],"versions":["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","3.46.0.1","3.46.0.2"]}],"products":[{"vendor":"h2o","product":"h2o"},{"vendor":"h2oai","product":"h2oai/h2o-3"}],"references":[{"url":"https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff","tags":["exploit","Exploit","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-7765","tags":["advisory"]},{"url":"https://github.com/h2oai/h2o-3/blob/7d418fa19d3ab434f742818e37f891bef9102c97/h2o-core/src/main/java/water/parser/ParseDataset.java#L900","tags":["web"]},{"url":"https://github.com/advisories/GHSA-6w62-3jvj-mfj6","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/7xxx/CVE-2024-7765.json","tags":["advisory"]},{"url":"https://github.com/h2oai/h2o-3","tags":["package"]},{"url":"https://pypi.org/project/h2o","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-7765","title":"Denial of Service in h2oai/h2o-3","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","status":"published","published":"2025-03-20T10:08:46.654Z","modified":"2025-03-20T14:29:59.997Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:34:21.025267Z"}],"euvd":[{"id":"EUVD-2025-6953","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","status":"published","published":"2025-03-20T10:08:46Z","modified":"2025-03-20T14:29:59Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:57.796612Z"}],"ghsa":[{"id":"GHSA-6w62-3jvj-mfj6","title":"H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","status":"published","published":"2025-03-20T12:32:46Z","modified":"2025-03-20T19:56:43Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:38:35.74197Z"}],"nvd":[{"id":"CVE-2024-7765","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","status":"published","published":"2025-03-20T10:15:36.867Z","modified":"2026-06-17T08:20:52.713Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T14:10:45.815983Z"}],"osv":[{"id":"CVE-2024-7765","title":"Denial of Service in h2oai/h2o-3","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling of highly compressed data, leading to significant data amplification.","status":"published","published":"2025-03-20T10:08:46.654Z","modified":"2026-10-28T02:31:10.899665298Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-409"],"updated_at":"2026-11-02T15:44:45.405014Z"},{"id":"GHSA-6w62-3jvj-mfj6","title":"H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","description":"In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. 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