Deserialization Vulnerability in Dask Loader Affects Remote Code Execution
CVE-2026-95897

5.1MEDIUM

Key Information:

Vendor

Dask

Status
Dask
Vendor
CVE Published:
23 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-95897?

A security vulnerability has been identified in Dask's Loader component, specifically in the from_npy_stack function within dask/array/core.py. This flaw enables potential attackers to manipulate data in a way that facilitates remote code execution through deserialization. Although the exploit has been disclosed publicly, the Dask team has yet to respond to the issue report. Users of affected versions should take immediate precautions to assess their systems against this vulnerability and follow any available security advisories.

Affected Version(s)

Dask 2026.0

Dask 2026.1

Dask 2026.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-95897 - Proof of Concept

References

https://vuldb.com/vuln/408543
vdb-entrytechnical-description
https://vuldb.com/vuln/408543/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-95897
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

__lbz__ (VulDB User)
VulDB CNA Team
.