HIGH🇵🇱 Wersja polska

CVE-2026-42557

CVSS 8.6v4.0pub. 2026-05-13upd. 2026-06-30

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. Prior to 4.5.7, JupyterLab's HTML sanitizer allowlists data-commandlinker-command and data-commandlinker-args on button elements, while CommandLinker listens for all click events on document.body and executes the named command without checking whether the element came from trusted JupyterLab UI. A notebook with a pre-saved HTML cell output containing a deceptive button can trigger arbitrary JupyterLab commands - including arbitrary code execution - on a single user click, without any code being submitted for execution by the user. This vulnerability is fixed in 4.5.7.

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/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

  • Jupyter Jupyterlab

    APP
    Jupyter
    < 4.5.7

  • Jupyter Notebook

    APP
    Jupyter
    7.0.0 – 7.5.6 (bez)
🔵
CHECK WITH VENDOR
No clear patch data available. Check vendor references.
Tags
RCEXSS
CWE
References

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