{"id":"CVE-2024-8062","aliases":["PYSEC-2026-1438"],"url":"https://o3.security/vulnerability/CVE-2024-8062","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.","published":"2025-03-20T12:32:47Z","modified":"2026-07-07T17:57:09.968843693Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.00465,"percentile":0.39308,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"ai.h2o:h2o-core","fixedVersion":null},{"ecosystem":"PyPI","name":"h2o","fixedVersion":null}],"fix":null,"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"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-07T17:57:09.968843693Z"}}