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CVE-2026-73416

Published Aug 13, 2026 CWE-178

Overview

CVE-2026-73416 is a known-severity vulnerability. It was published on August 13, 2026.

Technical Description

jupyterlab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From 4.5.0 until 4.5.10 and 4.6.2, in jupyterlab/extensions/manager.py and jupyterlab/extensions/pypi.py, JupyterLab's PyPI extension manager enforces blocked_extensions_uris by comparing requested install names to blocklist entries with custom normalization that is weaker than PyPI package-name canonicalization. An authenticated user can request a PyPI-equivalent spelling such as JupyterLab.Git for a blocklisted package such as jupyterlab-git, and JupyterLab accepts the install request even though pip resolves the variant to the same package. Security impact requires an allowlist or blocklist intended to restrict package installation, the PyPI Extension Manager, and kernels and terminals that are disabled or delegated to remote hosts. The bypass lets an authenticated user install a prohibited extension, defeat integrity restrictions, and affect availability w

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/jupyterlab/jupyterlab/commit/9365f020baec5221deaf11535ed554c06637c999 GitHub github.com/jupyterlab/jupyterlab/commit/be9303f5bcd5308eaeae953c5a3c903046682c2c GitHub github.com/jupyterlab/jupyterlab/commit/f1beab4a2027af4719d6edc07d52d6cf5a39a432 GitHub github.com/jupyterlab/jupyterlab/pull/19184 GitHub github.com/jupyterlab/jupyterlab/pull/19185 GitHub github.com/jupyterlab/jupyterlab/pull/19186 GitHub github.com/jupyterlab/jupyterlab/releases/tag/v4.5.10 GitHub github.com/jupyterlab/jupyterlab/releases/tag/v4.6.2 GitHub github.com/jupyterlab/jupyterlab/releases/tag/v4.7.0a1 GitHub github.com/jupyterlab/jupyterlab/security/advisories/GHSA-89vp-jrxv-24w8

Frequently Asked Questions

What is CVE-2026-73416?

CVE-2026-73416 is a known-severity vulnerability. It was published on August 13, 2026.

How severe is CVE-2026-73416?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-73416?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-73416?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-73416 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.
Code Review

AI-driven PR review catches vulnerable dependencies before they ship.
HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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