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TI-2024-06365 Aliases CVE-2024-6863GHSA-m37h-8r48-2cxj

Encryption of Arbitrary Files with Attacker-Controlled Key in h2oai/h2o-3

Priority HIGH 68CWE-749Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub.

Summary

In h2oai/h2o-3 version 3.46.0, an endpoint exposing a custom EncryptionTool allows an attacker to encrypt any files on the target server with a key of their choosing. The chosen key can also be overwritten, resulting in ransomware-like behavior. This vulnerability makes it possible for an attacker to encrypt arbitrary files with keys of their choice, making it exceedingly difficult for the target to recover the keys needed for decryption.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00357 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
h2oaih2oai/h2o-3up to latest—No fix listedCNA
—h2o (PyPI)3.32.1.2 – 3.46.0—No fix listedGHSA-m37h-8r48-2cxj
—ai.h2o:h2o-core (Maven)3.32.1.2 – 3.46.0—No fix listedGHSA-m37h-8r48-2cxj
  • h2oai/h2o-3 Vendorh2oai Affected up to latest Fixed in — No fix listed CNA
  • h2o (PyPI) Vendor— Affected 3.32.1.2 – 3.46.0 Fixed in — No fix listed GHSA-m37h-8r48-2cxj
  • ai.h2o:h2o-core (Maven) Vendor— Affected 3.32.1.2 – 3.46.0 Fixed in — No fix listed GHSA-m37h-8r48-2cxj

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:h2o:h2o:3.46.0:*:*:*:*:*:*:*3.46.0Vulnerableh2oai
  • cpe:2.3:a:h2o:h2o:3.46.0:*:*:*:*:*:*:* Versions 3.46.0 Vulnerable ·h2oai

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-6863
  2. 2026-10-03 Alias added: GHSA-m37h-8r48-2cxj

References

Exploit 1

Advisory 1

Other 2

  • TI-2025-05944 Deserialization Vulnerability in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
  • TI-2024-09776 Jdbc Deserialization in h2oai/h2o-3 CVSS 3.0CRITICAL 9.8
  • TI-2024-30727 H2O.ai H2O through 3.46.0.4 allows attackers to arbitrarily set the JDBC URL, leading to… CVSS 3.1CRITICAL 9.1
  • TI-2026-03424 Remote Code Execution in h2oai/h2o-3 CVSS 3.1CRITICAL 9.8
  • TI-2024-07992 Arbitrary File Overwrite in h2oai/h2o-3 CVSS 3.0HIGH 8.2
  • TI-2023-06020 External Control of File Name or Path in h2oai/h2o-3 CVSS 3.1HIGH 8.2
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences