Known Vulnerability
The current version has a known security vulnerability. Review the advisory and consider upgrading.
Security Vulnerability
PYSEC-2020-346
Source: osv.dev · Flagged: 1 month ago
jupyter-server has 58.9M monthly downloads and 564 GitHub stars. Version 2.20.0 supports Python 3.10+, first published in 2018.
It is actively maintained under a permissive license, last released in Jun 2026.
It is built on top of anyio, argon2-cffi and jinja2. It is used by 541 tracked packages, including notebook, jupyterlab and jupyterlab-server.
GitHub topics include jupyter and server.
Package Insights
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
100
Popularity
64
Adoption
70
Community
100
Provenance
0
How the maintenance status was determined
Last commit
5 days ago
Monthly downloads
58,928,508
•
Active
Activity within 30 days
Stable
Activity within 31-180 days
Minimal
Activity within 181-365 days, or no activity data
At Risk
No activity for > 365 days, but > 10,000 monthly downloads
Archived
Repository flagged as archived on GitHub
How the popularity category was determined
Monthly downloads
58,928,508
Stars
564
Stars per 1k downloads
0.01
•
Industry Standard
> 10,000,000 monthly downloads
Hidden Gem
< 0.5 stars per 1k downloads and > 100,000 monthly downloads
Community Favorite
> 5 stars per 1k downloads
Rising Star
Balanced ratio of stars to downloads
Unknown
Fewer than 1,000 monthly downloads, or no star data
How download momentum is calculated
Week daily avg
1,940,957
Month daily avg
1,964,284
Momentum
-1.2%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100Python version support tiers
requires_python
>=3.10
Cutting Edge
Minimum supported version is 3.12 or newer
•
Modern
Minimum supported version is 3.9, 3.10, or 3.11
Legacy
Supports 3.8 or older (or Python 2)
Unknown
No requires_python specified or unparseable
License categories
License
BSD 3-Clause License
•
Permissive
MIT, Apache, BSD, ISC, Unlicense, CC0, etc.
Copyleft
GPL, LGPL, AGPL, MPL, EPL, etc.
Proprietary
Commercial, all rights reserved, custom EULAs
Unknown
No license specified, or none of the above match
How the release cadence was determined
Last release
20 days ago
Total releases
159
Releases/year
20.0
•
Rapid
Last release within 365 days and > 12 releases/year
Regular
Last release within 365 days
Slow
Last release 366-730 days ago
Stalled
Last release > 730 days ago, or no releases
Unknown
No usable release date available
How contributor risk was determined
Contributors
472
Monthly downloads
58,928,508
High Load
≤ 2 contributors and ≥ 50,000 monthly downloads
Moderate Load
< 10 contributors and ≥ 500,000 monthly downloads
Low Load
< 25 contributors and ≥ 5,000,000 monthly downloads, or sole maintainer with ≥ 10,000 monthly downloads
•
Balanced
Enough contributors for the package's popularity
Unknown
No contributor data available
Engagement
87
Issue Burden
342.2
per 1k stars
Discussions
8.9
per 1k stars
Fork Ratio
116.8%
contrib / forks
Stale Release
No
PR Velocity
Quiet
Weekly Downloads
GitHub Stars
Not all downloads include detailed metadata. Breakdowns reflect the subset that does.
Downloads by OS
Linux
1.1M
Windows
36.2K
macOS
15.6K
Python Versions
3.10
31.5%
310.6K
3.12
21.2%
208.8K
3.11
19.0%
187.4K
3.9
16.0%
158.3K
3.13
12.3%
121.4K
Top Countries
1.
US
1.1M
US
2.
IE
100.2K
IE
3.
DK
82.7K
DK
4.
GB
57.3K
GB
5.
SG
48.8K
SG
6.
NL
48.7K
NL
7.
DE
26.3K
DE
8.
IN
18.9K
IN
9.
SE
15.6K
SE
10.
JP
11.8K
JP
Dependencies
19
- anyio >=3.1.0
- argon2-cffi >=21.1
- jinja2 >=3.0.3
- jupyter-client >=7.4.4
- jupyter-core !=5.0.*,>=4.12
- jupyter-events >=0.11.0
- jupyter-server-terminals >=0.4.4
- nbconvert >=6.4.4
- nbformat >=5.3.0
- overrides >=5.0
- packaging >=22.0
- prometheus-client >=0.9
- pywinpty !=3.0.4,>=2.0.1
- pyzmq >=24
- send2trash >=1.8.2
- terminado >=0.8.3
- tornado >=6.2.0
- traitlets >=5.6.0
- websocket-client >=1.7
24 optional dependencies
- flaky[test]
- ipykernel[test]
- ipykernel[docs]
- jinja2[docs]
- jupyter-client[docs]
- myst-parser[docs]
- nbformat[docs]
- pre-commit[test]
- prometheus-client[docs]
- pydata-sphinx-theme[docs]
- pytest[test]
- pytest-console-scripts[test]
- pytest-jupyter[test]
- pytest-timeout[test]
- requests[test]
- send2trash[docs]
- sphinx[docs]
- sphinx-autodoc-typehints[docs]
- sphinxcontrib-github-alt[docs]
- sphinxcontrib-openapi[docs]
- sphinxcontrib-spelling[docs]
- sphinxemoji[docs]
- tornado[docs]
- typing-extensions[docs]
Used By
541
- notebook
- jupyterlab
- jupyterlab-server
- jupyter-lsp
- notebook-shim
- jupyter-kernel-gateway
- jupyter-server-ydoc
- jupyter-server-fileid
- google-cloud-jupyter-config
- jupyter-nbextensions-configurator
- jupyter-server-proxy
- nbdime
- jupyter-book
- jupyterlab-git
- jupyter-archive
- voila
- jupyterlab-code-formatter
- jupyter-server-documents
- jupyterlab-chat
- jupyter-ai-acp-client
- jupyter-resource-usage
- jupyter-mcp-tools
- jupyter-mcp-server
- jupyter-ai-tools
- jupyter-ai-persona-manager
- jupyter-ai-router
- jupyter-server-mcp
- deepchecks
- jupyter-server-nbmodel
- jupyterlab-commands-toolkit
- jupyterlab-myst
- jupyter-ai-chat-commands
- graph-notebook
- mage-ai
- jupyterlite-sphinx
- jupyterlab-rise
- nbgitpuller
- jupyter-loopback
- dataproc-jupyter-plugin
- nbgrader
- pwb-jupyterlab
- mrx-link-core
- jupyter-scheduler
- jupyterlab-spellchecker
- mrx-link-git
- jupyter-enterprise-gateway
- mrx-link
- mrx-link-magic
- kernels-mixer
- notebook-intelligence
Package Information
License
BSD 3-Clause License
First Release
July 28, 2018
Last Release
2 weeks ago
Last Commit
5 days ago
Latest Version
2.20.0
Total Releases
159
Contributors
472
Open PRs
32
Archived
No
Python Versions
3
Wheels
py2
py3
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh