---
id: CVE-2026-95897
title: A security vulnerability has been detected in Dask up to 2026.8.0
summary: >-
  A security vulnerability has been detected in Dask up to 2026.8.0. This
  affects the function from_npy_stack of the file dask/array/core.py of the
  component Loader. Such manipulation leads to deserialization. The attack can
  be launched re…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L'
cwe:
  - CWE-20
  - CWE-502
vendor: Red Hat
product: Dask
affected:
  - Dask 2026.0
  - Dask 2026.1
  - Dask 2026.2
  - Dask 2026.3
  - Dask 2026.4
  - Dask 2026.5
  - Dask 2026.6
  - Dask 2026.7
  - Dask 2026.8.0
published: '2026-09-23'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T15:17:31.147'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-95897'
references:
  - url: 'https://github.com/dask/dask/'
    label: cna@vuldb.com
  - url: 'https://github.com/dask/dask/issues/12578'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-95897'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/953281'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/408543'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/408543/cti'
    label: cna@vuldb.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-95897.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-95897'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2539074'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-95897'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-95897'
tags:
  - nvd
  - cve.org
  - exploit-available
  - csaf
  - vex
  - red-hat
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-23T15:01:12.785179Z'
epss: 0.00337
epssPercentile: 0.27268
ingestedAt: '2026-09-23T01:14:44.487Z'
---

## Overview

A security vulnerability has been detected in Dask up to 2026.8.0. This affects the function from_npy_stack of the file dask/array/core.py of the component Loader. Such manipulation leads to deserialization. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift AI (RHOAI) · no fix planned: Red Hat OpenShift AI (RHOAI) · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-95897.json)