JupyterLab Desktop: One-Click Jupyter Server Token Leak leading to Remote Code Execution

Özet

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JupyterLab Desktop is the cross-platform desktop application for JupyterLab. Prior to 4.6.2-1, JupyterLab Desktop exposed getServerInfo to the renderer without confirming that the current page still had the local Jupyter server origin. In a local managed session using JupyterLab before 4.4.8, an attacker can place a crafted MathJax link in an untrusted notebook. If a victim opens the notebook and clicks the link, the existing renderer navigates to an attacker-controlled site while retaining access to the preload bridge. The site can call getServerInfo to obtain the local server URL and authentication token, then use the Jupyter REST API to create and trust a notebook that executes arbitrary code as the victim. Users whose environment already uses JupyterLab 4.4.8 or later are unaffected because the corrected link handling breaks the first step of the chain. This vulnerability is fixed in 4.6.2-1.

Etkilenen sürümler1 yazılım

Kaynaklar5 kaynak

• CVE.org kaydı
• NVD kaydı
• github.com/…esktop/security/advisories/GHSA-2mr8-962v-wc67 Diğer
• github.com/…ommit/7f8f64ae796efae77d106612c95f0edd6c5dc273 Diğer
• github.com/…erlab/jupyterlab-desktop/releases/tag/v4.6.2-1 Diğer

Kayıt geçmişi

1. 6 Kas 2026 23:30Yayımlandı

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