{"id":"GHSA-5c8j-g96x-cj78","summary":"H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request","details":"A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a `HEAD` request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controlled server that hangs, causing the application to block and become unresponsive to other requests.","aliases":["CVE-2024-8062","PYSEC-2026-1438"],"modified":"2026-07-07T17:57:09.968843693Z","published":"2025-03-20T12:32:47Z","database_specific":{"github_reviewed_at":"2025-03-20T20:29:11Z","nvd_published_at":"2025-03-20T10:15:40Z","cwe_ids":["CWE-1088"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-8062"},{"type":"PACKAGE","url":"https://github.com/h2oai/h2o-3"},{"type":"WEB","url":"https://github.com/h2oai/h2o-3/blob/047a4d617240a56e74f834207c65973d133391cb/h2o-core/src/main/java/water/persist/PersistManager.java#L302"},{"type":"WEB","url":"https://huntr.com/bounties/a04190d9-4acb-449a-9a7f-f1bf6be1ed23"}],"affected":[{"package":{"name":"h2o","ecosystem":"PyPI","purl":"pkg:pypi/h2o"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0.1"},{"last_affected":"3.46.0"}]}],"versions":["3.10.0.10","3.10.0.3","3.10.0.6","3.10.0.7","3.10.0.8","3.10.3.3","3.10.3.4","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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-5c8j-g96x-cj78/GHSA-5c8j-g96x-cj78.json"}},{"package":{"name":"ai.h2o:h2o-core","ecosystem":"Maven","purl":"pkg:maven/ai.h2o/h2o-core"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0.1"},{"last_affected":"3.46.0"}]}],"versions":["3.10.0.1","3.10.0.10","3.10.0.2","3.10.0.3","3.10.0.4","3.10.0.5","3.10.0.6","3.10.0.7","3.10.0.8","3.10.0.9","3.10.1.1","3.10.1.2","3.10.2.1","3.10.2.2","3.10.3.1","3.10.3.2","3.10.3.3","3.10.3.4","3.10.3.5","3.10.3.6","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","3.2.0.1","3.2.0.2","3.2.0.3","3.2.0.4","3.2.0.5","3.2.0.6","3.2.0.7","3.2.0.8","3.2.0.9","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","3.4.0.1","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","3.6.0.1","3.6.0.10","3.6.0.11","3.6.0.12","3.6.0.2","3.6.0.3","3.6.0.4","3.6.0.5","3.6.0.7","3.6.0.8","3.8.0.1","3.8.0.2","3.8.0.3","3.8.0.4","3.8.0.5","3.8.0.6","3.8.1.1","3.8.1.2","3.8.1.3","3.8.1.4","3.8.2.1","3.8.2.11","3.8.2.2","3.8.2.3","3.8.2.4","3.8.2.5","3.8.2.6","3.8.2.7","3.8.2.8","3.8.2.9","3.8.3.1","3.8.3.2","3.8.3.3","3.8.3.4"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-5c8j-g96x-cj78/GHSA-5c8j-g96x-cj78.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"}]}