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Vulnerability record · CVE-2024-45758 · published 6 September 2024

CVE-2024-45758: H2o deserialization of untrusted data vulnerability

H2o · H2o

H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to deserialization attacks, file reads, and command execution. Exploitation can occur when an attacker has access to post to the ImportSQLTable URI with a JSON document containing a connection_url property with any typical JDBC Connection URL attack payload such as one that uses queryInterceptors.

9.1 CVSS 3.1 Critical EPSS 0.91% · top 41.7% CWE-502 · Deserialization of untrusted data
9.1CVSS 3.1 base score
0.91%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

H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to deserialization attacks, file reads, and command execution. Exploitation can occur when an attacker has access to post to the ImportSQLTable URI with a JSON document containing a connection_url property with any typical JDBC Connection URL attack payload such as one that uses queryInterceptors.

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

Affected products

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

References

LinkTags
https://gist.github.com/AfterSnows/c24ca3c26dc89ab797e610e92a6a9acb Third Party Advisory
https://spear-shield.notion.site/Unauthenticated-Remote-Code-Execution-via-Unrestricted-JDBC-Connection-87a958a487404419 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%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-2024-45758), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.