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Vulnerability record · CVE-2024-10553 · published 20 March 2025

CVE-2024-10553: H2o deserialization of untrusted data vulnerability

H2o · H2o

A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are passed to DriverManager.getConnection, leading to deserialization if a MySQL or PostgreSQL driver is available in the classpath. This issue is fixed in version 3.47.0.

9.8 CVSS 3.0 Critical EPSS 1.6% · top 25.4% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.0 base score
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability in the h2oai/h2o-3 REST API versions 3.46.0.4 allows unauthenticated remote attackers to execute arbitrary code via deserialization of untrusted data. The vulnerability exists in the endpoints POST /99/ImportSQLTable and POST /3/SaveToHiveTable, where user-controlled JDBC URLs are passed to DriverManager.getConnection, leading to deserialization if a MySQL or PostgreSQL driver is available in the classpath. This issue is fixed in version 3.47.0.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
https://github.com/h2oai/h2o-3/commit/ac1d642b4d86f10a02d75974055baf2a4b2025ac Patch
https://huntr.com/bounties/e6f550dd-eda2-428c-a740-ed8f893a084b 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-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 0.55%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%7.5CVE-2026-44453H2o allocation without limits vulnerabilityh2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3. Prior to commit 6b5370d, h2o is vulnerable to a Denial of Service attack when cal…EPSS 0.49%

Source: NIST National Vulnerability Database (record CVE-2024-10553), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.