Jupyter Notebook vulnerabilities: known CVEs & security history
Jupyter · Developer Tools · 17 tracked CVEs · 0 actively exploited · updated June 2026 · what is a CVE? →
This is the full list of known vulnerabilities (CVEs) across all Jupyter Notebook release lines — 17 in total. A CVE here doesn't mean your version is affected — check Jupyter Notebook's current status and the safe version to run.
Known Jupyter Notebook CVEs
Actively-exploited and most-severe first. Open any CVE for full details.
| CVE | Severity | CVSS | EPSS | Year |
|---|---|---|---|---|
| CVE-2021-32798 | critical | 10 | 2% | 2021 |
| CVE-2026-42557 | critical | 9.6 | 0% | 2026 |
| CVE-2018-8768 | high | 7.8 | 1% | 2018 |
| CVE-2024-43805 | high | 7.6 | 0% | 2024 |
| CVE-2024-22421 | high | 7.6 | 1% | 2024 |
| CVE-2022-24758 | high | 7.5 | 1% | 2022 |
| CVE-2015-7337 | medium | 6.8 | 2% | 2015 |
| CVE-2024-22420 | medium | 6.5 | 1% | 2024 |
| CVE-2019-10856 | medium | 6.1 | 1% | 2019 |
| CVE-2019-10255 | medium | 6.1 | 2% | 2019 |
| CVE-2018-19352 | medium | 6.1 | 1% | 2018 |
| CVE-2018-19351 | medium | 6.1 | 2% | 2018 |
| CVE-2019-9644 | medium | 5.4 | 2% | 2019 |
| CVE-2018-21030 | medium | 5.3 | 1% | 2019 |
| CVE-2020-26215 | medium | 4.4 | 1% | 2020 |
| CVE-2022-29238 | medium | 4.3 | 1% | 2022 |
| CVE-2015-6938 | medium | 4.3 | 3% | 2015 |
Is my Jupyter Notebook 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 Jupyter Notebook version → · Monitor Jupyter Notebook for new CVEs →
Jupyter Notebook vulnerabilities — frequently asked
How many known vulnerabilities does Jupyter Notebook have?
IsItPatched tracks 17 CVEs for Jupyter Notebook. 2 are critical-severity and 4 high-severity. These span every release line — what matters is whether the version you run is affected.
Does Jupyter Notebook have any actively-exploited vulnerabilities?
None of Jupyter Notebook'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 Jupyter Notebook vulnerability?
Among tracked issues, CVE-2021-32798 (CRITICAL, CVSS 10) ranks highest — a Cross-site scripting (XSS) weakness.
Is Jupyter Notebook safe to use?
It depends on the version. The latest supported Jupyter Notebook 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: Jupyter Notebook security status · Jupyter Notebook end-of-life · actively-exploited CVEs. Always verify against Jupyter's advisories — see our disclaimer.