JupyterLab vulnerabilities: known CVEs & security history
Project Jupyter · AI / ML · 8 tracked CVEs · 0 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all JupyterLab release lines — 8 in total. A CVE here doesn't mean your version is affected — check JupyterLab's current status and the safe version to run.
Known JupyterLab CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2024-39700 | critical | 9.9 | 1% | 2024 |
| CVE-2026-42557 | critical | 9.6 | 0% | 2026 |
| CVE-2026-42266 | high | 8.8 | 0% | 2026 |
| CVE-2024-43805 | high | 7.6 | 0% | 2024 |
| CVE-2024-22421 | high | 7.6 | 1% | 2024 |
| CVE-2021-32797 | high | 7.4 | 3% | 2021 |
| CVE-2024-22420 | medium | 6.5 | 1% | 2024 |
| CVE-2025-59842 | medium | 4.3 | 0% | 2025 |
Is my JupyterLab version affected?
The list above spans every release. To know whether your version is affected — and the minimum safe version to upgrade to — check it directly.
Check your JupyterLab version → · Monitor JupyterLab for new CVEs →
JupyterLab vulnerabilities — frequently asked
How many known vulnerabilities does JupyterLab have?
IsItPatched tracks 8 CVEs for JupyterLab. 2 are critical-severity and 4 high-severity. These span every release line — what matters is whether the version you run is affected.
Does JupyterLab have any actively-exploited vulnerabilities?
None of JupyterLab's tracked CVEs are currently in CISA's KEV catalog — but new ones can be added at any time, so keep your version current.
What is the most severe JupyterLab vulnerability?
Among tracked issues, CVE-2024-39700 (CRITICAL, CVSS 9.9) ranks highest — a Code injection weakness.
Is JupyterLab safe to use?
It depends on the version. The latest supported JupyterLab release clears the known issues; older versions may still be affected. Check the exact version you run for a verdict.
CVE data aggregated from NVD, CISA KEV and EPSS (FIRST.org). Related: JupyterLab security status · JupyterLab end-of-life · actively-exploited CVEs. Always verify against Project Jupyter's advisories — see our disclaimer.