CVE-2024-6854: PYSEC-2026-1436 - H2O Vulnerable to Arbitrary File Overwrite via File Export

CVE-2024-6854 · Severity: low · CVSS 3 · Published 2026-07-07

H2O Vulnerable to Arbitrary File Overwrite via File Export

Technologies: ai.h2o:h2o-core (Maven), h2o (PyPI). Vendors: Maven, PyPI.

Quick answers

Is CVE-2024-6854 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2024-6854 being exploited in the wild.
How severe is CVE-2024-6854?
Low severity, with a CVSS score of 3, published 7 July 2026.
Which products and versions are affected?
ai.h2o:h2o-core (Maven) ECOSYSTEM:introduced=3.32.1.1,last_affected=3.46.0; h2o (PyPI) ECOSYSTEM:introduced=3.32.1.1,last_affected=3.46.0.
Is there a fix for CVE-2024-6854?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2024-6854?
Check whether you run ai.h2o:h2o-core (Maven) or h2o (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • ai.h2o:h2o-core (Maven) ECOSYSTEM:introduced=3.32.1.1,last_affected=3.46.0
  • h2o (PyPI) ECOSYSTEM:introduced=3.32.1.1,last_affected=3.46.0

Identifiers

  • CVE-2024-6854
  • GHSA-47f6-5p7h-5f3h
  • PYSEC-2026-1436

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