{"id":"GHSA-6w62-3jvj-mfj6","summary":"H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing","details":"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.","aliases":["CVE-2024-7765","PYSEC-2026-1439"],"modified":"2026-07-07T17:56:47.443201005Z","published":"2025-03-20T12:32:46Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-03-20T19:56:42Z","nvd_published_at":"2025-03-20T10:15:36Z","cwe_ids":["CWE-409"],"severity":"HIGH"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-7765"},{"type":"PACKAGE","url":"https://github.com/h2oai/h2o-3"},{"type":"WEB","url":"https://github.com/h2oai/h2o-3/blob/7d418fa19d3ab434f742818e37f891bef9102c97/h2o-core/src/main/java/water/parser/ParseDataset.java#L900"},{"type":"WEB","url":"https://huntr.com/bounties/0e58b1a5-bdca-4e60-af92-09de9c76a9ff"}],"affected":[{"package":{"name":"h2o","ecosystem":"PyPI","purl":"pkg:pypi/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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-6w62-3jvj-mfj6/GHSA-6w62-3jvj-mfj6.json"}},{"package":{"name":"ai.h2o:h2o-core","ecosystem":"Maven","purl":"pkg:maven/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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-6w62-3jvj-mfj6/GHSA-6w62-3jvj-mfj6.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}