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.
Published: 2026-11-05
Score: 8.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 05 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
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.
Title h5io before 0.2.6 Arbitrary Code Execution via read_hdf5
Weaknesses CWE-502
CWE-95
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-05T18:30:58.290Z

Reserved: 2026-11-02T15:06:46.389Z

Link: CVE-2026-120499

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-05T17:18:00.097

Modified: 2026-11-05T19:17:14.713

Link: CVE-2026-120499

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-05T19:15:07Z

Weaknesses
  • CWE-502

    Deserialization of Untrusted Data

  • CWE-95

    Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')