CVE-2026-120499

HighCVSS 7.8/10Last modified Nov 12, 2026

Description

h5io before 0.2.6 contains a code injection vulnerability in read_hdf5() that allows attackers to execute arbitrary code by supplying a crafted HDF5 file. Attackers can store Python code in a node titled timezone, which _triage_read() passes to eval() with builtins reachable, name an arbitrary module in class or custom-object nodes that _import_class() imports, or place pickled objects in pd_dataframe or pd_series nodes that pandas deserializes on read.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-95 CWE-502

Affected software

No affected versions have been published.

Timeline

Published: Nov 5, 2026
Last modified: Nov 12, 2026
NVD status: Deferred

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