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Vulnerability record · CVE-2024-8062 · published 20 March 2025

CVE-2024-8062: H2o vulnerability

H2o · H2o

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.

7.5 CVSS 3.1 High EPSS 0.48% · top 60.0% CWE-1088 · CWE-1088
7.5CVSS 3.1 base score
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://huntr.com/bounties/a04190d9-4acb-449a-9a7f-f1bf6be1ed23 ExploitThird Party Advisory
https://huntr.com/bounties/a04190d9-4acb-449a-9a7f-f1bf6be1ed23 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2026-3960H2o code injection vulnerabilityA critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in H2O-3 version 3.46.0.9 and prior…EPSS 1.0%9.8CVE-2025-6544H2o deserialization of untrusted data vulnerabilityA deserialization vulnerability exists in h2oai/h2o-3 versions <= 3.46.0.8, allowing attackers to read arbitrary system files and execute arbitrary c…EPSS 0.92%9.8CVE-2024-10553H2o deserialization of untrusted data vulnerabilityA vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization o…EPSS 1.6%9.8CVE-2023-6016H2o code injection vulnerabilityAn attacker is able to gain remote code execution on a server hosting the H2O dashboard through it's POJO model import feature.EPSS 31%9.1CVE-2024-45758H2o deserialization of untrusted data vulnerabilityH2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to deserialization attacks, file reads, and command execution. …EPSS 0.91%8.2CVE-2024-8616H2o vulnerabilityIn h2oai/h2o-3 version 3.46.0, the `/99/Models/{name}/json` endpoint allows for arbitrary file overwrite on the target server. The vulnerability aris…EPSS 0.56%8.2CVE-2023-6569H2o vulnerabilityExternal Control of File Name or Path in h2oai/h2o-3EPSS 0.72%7.5CVE-2026-54340H2o uncontrolled resource consumption vulnerabilityh2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 9265bdd, there is an HTTP/2 state amplification issue that combin…EPSS 0.49%

Source: NIST National Vulnerability Database (record CVE-2024-8062), CISA KEV, FIRST EPSS (scores of 2026-10-14). This page is refreshed as NVD updates the record.