CVE-2026-23528

MEDIUM

6.1

Description

Dask distributed is a distributed task scheduler for Dask. Prior to 2026.1.0, when Jupyter Lab, jupyter-server-proxy, and Dask distributed are all run together, it is possible to craft a URL which will result in code being executed by Jupyter due to a cross-side-scripting (XSS) bug in the Dask dashboard. It is possible for attackers to craft a phishing URL that assumes Jupyter Lab and Dask may be running on localhost and using default ports. If a user clicks on the malicious link it will open an error page in the Dask Dashboard via the Jupyter Lab proxy which will cause code to be executed by the default Jupyter Python kernel. This vulnerability is fixed in 2026.1.0.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published1/16/2026

Last Modified3/12/2026

Sourcenvd

Honeypot Sightings0

Affected Products

anaconda:dask

Weaknesses (CWE)

CWE-79CWE-80CWE-250

References

https://github.com/dask/distributed/commit/ab72092a8a938923c2bb51a2cd14ca26614827fa(security-advisories@github.com)

https://github.com/dask/distributed/security/advisories/GHSA-c336-7962-wfj2(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.