PT-2026-39398 · Julia · Hdf5 Jll

Published 2026-04-29 · Updated 2026-04-29

OSV

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems. Real-world exploitability of this issue in terms of remote-code execution is currently unknown. Version 1.14.4-2 fixes the issue.

Fix

Related Identifiers

JLSEC-2026-352

Affected Products

Hdf5 Jll

References · 2

• https://osv.dev/vulnerability/JLSEC-2026-352 · Vendor Advisory
• https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5p2m-j456-9mr2 · Note