{"id":"CVE-2024-8062","aliases":["EUVD-2025-6929","GHSA-5c8j-g96x-cj78","PYSEC-2026-1438"],"status":"published","title":"Denial of Service in h2oai/h2o-3","description":"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.","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":0.00482,"percentile":0.41872,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1088"],"published":"2025-03-20T10:11:04Z","modified":"2026-07-07T17:57:09Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"h2o","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0.1"},{"last_affected":"3.46.0"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"ai.h2o:h2o-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2.0.1"},{"last_affected":"3.46.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"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"]},{"source":"osv","ecosystem":"Maven","package":"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"]},{"source":"osv","ecosystem":"PyPI","package":"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"]}],"products":[{"vendor":"h2o","product":"h2o"},{"vendor":"h2oai","product":"h2oai/h2o-3"}],"references":[{"url":"https://huntr.com/bounties/a04190d9-4acb-449a-9a7f-f1bf6be1ed23","tags":["exploit","Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-8062","tags":["advisory"]},{"url":"https://github.com/h2oai/h2o-3/blob/047a4d617240a56e74f834207c65973d133391cb/h2o-core/src/main/java/water/persist/PersistManager.java#L302","tags":["web"]},{"url":"https://github.com/advisories/GHSA-5c8j-g96x-cj78","tags":["advisory"]},{"url":"https://github.com/h2oai/h2o-3","tags":["package"]},{"url":"https://pypi.org/project/h2o","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-8062","title":"Denial of Service in h2oai/h2o-3","description":"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.","status":"published","published":"2025-03-20T10:11:04.864Z","modified":"2025-03-20T15:23:28.917Z","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-1088"],"updated_at":"2026-11-02T14:34:09.216761Z"}],"euvd":[{"id":"EUVD-2025-6929","description":"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.","status":"published","published":"2025-03-20T10:11:04Z","modified":"2025-03-20T15:23:28Z","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-5c8j-g96x-cj78","title":"H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request","description":"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.","status":"published","published":"2025-03-20T12:32:47Z","modified":"2025-03-20T20:29:12Z","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-1088"],"updated_at":"2026-11-02T14:38:35.74197Z"}],"nvd":[{"id":"CVE-2024-8062","description":"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.","status":"published","published":"2025-03-20T10:15:40.627Z","modified":"2026-06-17T08:21:47.65Z","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-1088"],"updated_at":"2026-11-02T14:10:45.815983Z"}],"osv":[{"id":"GHSA-5c8j-g96x-cj78","title":"H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request","description":"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.","status":"published","published":"2025-03-20T12:32:47Z","modified":"2026-07-07T17:57:09.968843693Z","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-1088"],"updated_at":"2026-11-02T15:46:38.213481Z"},{"id":"PYSEC-2026-1438","title":"H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request","description":"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.","status":"published","published":"2026-07-07T14:34:56.262232Z","modified":"2026-07-07T17:47:39.962990287Z","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":"2026-11-02T15:52:54.622769Z"}]}}