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Vulnerability record · CVE-2023-47248 · published 9 November 2023

CVE-2023-47248: Apache pyarrow deserialization of untrusted data vulnerability

Apache · Pyarrow

Deserialization of untrusted data in IPC and Parquet readers in PyArrow versions 0.14.0 to 14.0.0 allows arbitrary code execution. An application is vulnerable if it reads Arrow IPC, Feather or Parquet data from untrusted sources (for example user-supplied input files). This vulnerability only affects PyArrow, not other Apache Arrow implementations or bindings. It is recommended that users of PyArrow upgrade to 14.0.1. Similarly, it is recommended that downstream libraries upgrade their dependency requirements to PyArrow 14.0.1 or later. PyPI packages are already available, and we hope that conda-forge packages will be available soon. If it is not possible to upgrade, we provide a separate package `pyarrow-hotfix` that disables the vulnerability on older PyArrow versions. See https://pypi.org/project/pyarrow-hotfix/ for instructions.

9.8 CVSS 3.1 Critical EPSS 15% · top 3.5% CWE-502 · Deserialization of untrusted data
9.8CVSS 3.1 base score
15%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

Deserialization of untrusted data in IPC and Parquet readers in PyArrow versions 0.14.0 to 14.0.0 allows arbitrary code execution. An application is vulnerable if it reads Arrow IPC, Feather or Parquet data from untrusted sources (for example user-supplied input files). This vulnerability only affects PyArrow, not other Apache Arrow implementations or bindings. It is recommended that users of PyArrow upgrade to 14.0.1. Similarly, it is recommended that downstream libraries upgrade their dependency requirements to PyArrow 14.0.1 or later. PyPI packages are already available, and we hope that conda-forge packages will be available soon. If it is not possible to upgrade, we provide a separate package `pyarrow-hotfix` that disables the vulnerability on older PyArrow versions. See https://pypi.org/project/pyarrow-hotfix/ for instructions.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/apache/arrow/commit/f14170976372436ec1d03a724d8d3f3925484ecf Patch
https://lists.apache.org/thread/yhy7tdfjf9hrl9vfrtzo8p2cyjq87v7n Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/FR34AIPXVTMB3XPRU5ULV5HHW
https://lists.fedoraproject.org/archives/list/[email protected]/message/MAGWEAJDWO2ACYATUQCPXLSYY
https://lists.fedoraproject.org/archives/list/[email protected]/message/MWFYXLVBTBHNKYRXI572RFX7I
https://pypi.org/project/pyarrow-hotfix/ Product
https://github.com/apache/arrow/commit/f14170976372436ec1d03a724d8d3f3925484ecf Patch
https://lists.apache.org/thread/yhy7tdfjf9hrl9vfrtzo8p2cyjq87v7n Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/FR34AIPXVTMB3XPRU5ULV5HHW
https://lists.fedoraproject.org/archives/list/[email protected]/message/MAGWEAJDWO2ACYATUQCPXLSYY
https://lists.fedoraproject.org/archives/list/[email protected]/message/MWFYXLVBTBHNKYRXI572RFX7I
https://pypi.org/project/pyarrow-hotfix/ Product

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Source: NIST National Vulnerability Database (record CVE-2023-47248), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.