H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | ai.h2o:h2o-core | <= 3.46.0.7 | no fix |
| Python (PyPI) | h2o | <= 3.46.0.7 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2024-45758
- https://github.com/h2oai/h2o-3/issues/16425
- https://github.com/h2oai/h2o-3/issues/16622
- https://github.com/h2oai/h2o-3/pull/16624
- https://github.com/h2oai/h2o-3/commit/f714edd6b8429c7a7211b779b6ec108a95b7382d
- https://gist.github.com/AfterSnows/c24ca3c26dc89ab797e610e92a6a9acb
- https://github.com/h2oai/h2o-3
- https://spear-shield.notion.site/Unauthenticated-Remote-Code-Execution-via-Unrestricted-JDBC-Connection-87a958a4874044199cbb86422d1f6068
- https://pypi.org/project/h2o
- https://github.com/advisories/GHSA-hrmc-jmp7-mpm2
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N- Weakness (CWE)
CWE-502- Platform
- Java / Kotlin (Maven), Python (PyPI)
- Package
ai.h2o:h2o-core, h2o- Disclosed
- 06.09.2024
- Updated
- 11.10.2026 12:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-hrmc-jmp7-mpm2 - CC BY 4.0
OSV / GitHub Advisory Database - PYSEC-2026-352 - PyPA Advisory Database; CC BY 4.0
Vulnerability history: ai.h2o:h2o-core
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 15
- First → latest
- 11.2023 04.2026
- Without a fix
- 13
- Exploited in attacks
- 0
Severity breakdown
- Critical 6
- High 8
- Medium 1
Disclosures per year
- 2023: 1
- 2024: 2
- 2025: 10
- 2026: 2
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H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL this entry
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