Severity:
CRITICAL RISK
(9.6)
Cross-Site Scripting via HTML Command Injection (CWE-79) in JupyterLab CommandLinker
CVE-2026-42557
Modified
Vulnerability Type
Category:
Cross-Site Scripting (XSS) / UI-Triggered Code Execution
CWE:
CWE-79
Impact:
Arbitrary Code Execution in JupyterLab Session
Severity:
CRITICAL RISK
(9.6)
CVSS Version:
3.1
Catch This CVE While Code Is Being Written
Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.
Summary
Affected Context
Exploit Preconditions
Why This Happens
Potential Impact
General Mitigation Guidance
How Teams Detect Issues Like This
Frequently Asked Questions
Source
NDV
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