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Vulnerabilities

Vulnerability · CVE-2024-45758

H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL

Published Sep 6, 2024 · catalog updated Oct 27, 2026 · H2O.ai H2O vulnerable to

Last checked Nov 5, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2024-45758. EPSS is 0.91%. Act only if a listed version of H2O.ai H2O vulnerable to is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (H2O.ai H2O vulnerable to).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.91%
Remediation
Advisory link
Affected products
Maven ai.h2o:h2o-core · PyPI 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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Maven ai.h2o:h2o-core0 → 3.46.0.7
  • PyPI h2o0 → 3.46.0.7

How to fix CVE-2024-45758

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2024-45758. EPSS is 0.91%. Act only if a listed version of H2O.ai H2O vulnerable to is installed.

Which versions are affected?

Compare what you have installed with 0 → 3.46.0.7. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data. EPSS 0.91%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 6, 2024 · PyPA Advisory Database

    Detected

    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.

  2. Oct 27, 2026 · PyPA Advisory Database

    Fix available

    ai.h2o:h2o-core fixed in 3.46.0.7

  3. Oct 27, 2026 · PyPA Advisory Database

    Fix available

    h2o fixed in 3.46.0.7

  4. Oct 27, 2026 · PyPA Advisory Database

    Updated

    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.

Sources

References

Freshness

Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • GitHub Advisory DatabaseOct 28, 2026
  • OpenSSF OSV / OSV ScannerOct 28, 2026
  • PyPA Advisory DatabaseOct 28, 2026
  • CVE.orgOct 27, 2026