CVE-2026-23528

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/dask/distributed/commit/ab72092a8a938923c2bb51a2cd14ca26614827fa
https://github.com/dask/distributed/security/advisories/GHSA-c336-7962-wfj2

Configurations

No configuration.

History

No history.

Information

Published : 2026-01-16 17:15

Updated : 2026-01-26 15:05

NVD link : CVE-2026-23528

Mitre link : CVE-2026-23528

CVE.ORG link : CVE-2026-23528

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-80

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

CWE-250

Execution with Unnecessary Privileges

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