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Jupyter Notebook Vulnerable to Authentication Token Theft via CommandLinker XSS

🗓️ 30 Apr 2026 17:25:47Reported by GitHub Advisory DatabaseType 
github
 github
🔗 github.com👁 91 Views

Stored cross site scripting in Jupyter Notebook enables token theft and full account takeover via REST interface.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-40171
6 May 202619:36
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-40171
6 May 202619:36
–alpinelinux
cgr
Chainguard
CVE-2026-40171 vulnerabilities
1 May 202613:18
–cgr
circl
Circl
CVE-2026-40171
7 May 202601:37
–circl
cnnvd
CNNVD
Jupyter’s various products have cross-site scripting vulnerabilities
6 May 202600:00
–cnnvd
cve
CVE
CVE-2026-40171
6 May 202619:36
–cve
cvelist
Cvelist
CVE-2026-40171 Jupyter Notebook and JupyterLab token theft via stored XSS in help command linker
6 May 202619:36
–cvelist
debiancve
Debian CVE
CVE-2026-40171
6 May 202619:36
–debiancve
mend
Mend
CVE-2026-40171
6 May 202619:36
–mend
nvd
NVD
CVE-2026-40171
6 May 202620:16
–nvd
Rows per page
Vulners
Node
OR
jupyterlabhelp-extensionRange≤4.5.6npm
jupyterlabjupyterlabRange≤4.5.6pip
jupyternotebookRange7.0.0–7.5.5pip
jupyter-notebookhelp-extensionRange7.0.0–7.5.5npm

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