CVE-2026-23528

MEDIUM EPSS 10.6%
Published Jan 16, 20265mo ago · Modified Jun 17, 20261w ago
5.3 CVSS 4.0
Medium
Find Similar
Published Jan 16, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
5.3
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
10.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 3

CWE-250
CWE-79 Cross-site Scripting Injection
CWE-80

Affected Products 1

VendorProductVersionRange
anacondadask* <2026.1.0

References 2

  • github.com https://github.com/dask/distributed/commit/ab72092a8a938923c2bb51a2cd14ca26614827fa
    Patch
  • github.com https://github.com/dask/distributed/security/advisories/GHSA-c336-7962-wfj2
    Vendor Advisory

Remediation

  • github.com https://github.com/dask/distributed/commit/ab72092a8a938923c2bb51a2cd14ca26614827fa
    Patch