CVE-2024-5986

Critical

Published: 02 February 2026

Published

02 February 2026

Modified

15 April 2026

KEV Added

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Patch

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CVSS Score v3 9.1 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

EPSS Score 0.0063 45.5th percentile

Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2024-5986 is a critical-severity External Control of File Name or Path (CWE-73) vulnerability. Its CVSS base score is 9.1 (Critical).

Operationally, ranked at the 45.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

This vulnerability is AI-related — categorised as Machine Learning Libraries; in the Supply Chain and Deployment risk domain.

OWASP Top 10 for Web (2025)

EU & UK References

🇪🇺 ENISA EUVD: EUVD-2024-55393

Vulnerability details

A vulnerability in h2oai/h2o-3 version 3.46.0.1 allows remote attackers to write arbitrary data to any file on the server. This is achieved by exploiting the `/3/Parse` endpoint to inject attacker-controlled data as the header of an empty file, which is…

then exported using the `/3/Frames/framename/export` endpoint. The impact of this vulnerability includes the potential for remote code execution and complete access to the system running h2o-3, as attackers can overwrite critical files such as private SSH keys or script files.