---
title: "CVE-2023-47248: PyArrow: Arbitrary code execution when loading a malicious data file"
url: https://erroneo.us/security/cve/CVE-2023-47248/
description: "CVE-2023-47248 (pyarrow (PyPI)): Deserialization of untrusted data in IPC and Parquet readers in PyArrow versions 0.14.0 to 14.0.0 allows arbitrary code…"
type: vulnerability-record
section: "Security Digest"
date_published: 2023-11-09
date_modified: 2025-02-13
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2023-47248"
kev: false
cvss: 9.3
epss: 0.14528
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2023-47248: PyArrow: Arbitrary code execution when loading a malicious data file

**Signal:** High exploit likelihood. EPSS ranks it in the top 5% of all CVEs for likely exploitation in the next 30 days. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 14.5% , percentile 97: FIRST’s model estimates a 14.5% chance of exploitation activity in the next 30 days, higher than 97% of all scored CVEs (very high). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes pyarrow (PyPI) >= 0.14.0, < 14.0.1, fixed in 14.0.1 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- PyPI `pyarrow` >= 0.14.0, < 14.0.1 → fixed: 14.0.1

## Affected products (CVE record)

- Apache Software Foundation PyArrow: 0.14.0 <= 14.0.0
- Apache Software Foundation PyArrow: 0.14.0 <= 14.0.0

## Severity

- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 14.53% probability of exploitation activity in the next 30 days; percentile 97.

## Sources

- [lists.apache.org](https://lists.apache.org/thread/yhy7tdfjf9hrl9vfrtzo8p2cyjq87v7n)
- [github.com](https://github.com/apache/arrow/commit/f14170976372436ec1d03a724d8d3f3925484ecf)
- [pypi.org](https://pypi.org/project/pyarrow-hotfix/)
- [GitHub Advisory GHSA-5wvp-7f3h-6wmm](https://github.com/advisories/GHSA-5wvp-7f3h-6wmm)
- [CVE.org record CVE-2023-47248](https://www.cve.org/CVERecord?id=CVE-2023-47248)
- [NVD entry CVE-2023-47248](https://nvd.nist.gov/vuln/detail/CVE-2023-47248)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FR34AIPXVTMB3XPRU5ULV5HHWPMRE33X/)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MAGWEAJDWO2ACYATUQCPXLSYY5C3L3XU/)
- [lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MWFYXLVBTBHNKYRXI572RFX7IJDDQGBL/)
- [github.com](https://github.com/pypa/advisory-database/tree/main/vulns/pyarrow/PYSEC-2023-238.yaml)
- [openwall.com](https://www.openwall.com/lists/oss-security/2023/11/08/7)

---
Source page: https://erroneo.us/security/cve/CVE-2023-47248/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt