PyRank
corydolphin

flask-cors

Cross Origin Resource Sharing ( CORS ) support for Flask
PyPI GitHub Verified repo
No known security advisories. The current version has no OSV.dev malware reports and no critical or high-severity vulnerabilities.

flask-cors has 57.5M monthly downloads and 933 GitHub stars. Version 6.0.5 supports Python <4.0,>=3.9, first published in 2013.

It is actively maintained under a permissive license, last released in Jun 2026.

It is built on top of flask, typing-extensions and werkzeug. It is used by 1,035 tracked packages, including mlflow, locust and apache-superset.

GitHub topics include flask-extensions, flask-cors and cors.

Downloads
Day
1.9M
Week
13.3M
Month
57.5M
Stars
933
Forks
154
Issues
20
Version
6.0.5

Package Insights

What's this?
Score breakdown - each component scores 0-100, weighted by percentage
Maintenance
80
Popularity
63
Adoption
70
Community
60
Provenance
100
How the maintenance status was determined
Last commit
28 days ago
Monthly downloads
57,491,888
• 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
57,491,888
Stars
933
Stars per 1k downloads
0.02
• 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
1,905,627
Month daily avg
1,916,396
Momentum
-0.6%
((week_daily_avg - month_daily_avg) / month_daily_avg) * 100
Python version support tiers
requires_python
<4.0,>=3.9
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
MIT
• 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
28 days ago
Total releases
11
Releases/year
0.8
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
44
Monthly downloads
57,491,888
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
65
 
Issue Burden
21.4
per 1k stars
Discussions
0.0
per 1k stars
Fork Ratio
28.6%
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 31.8K
macOS 9.7K

Python Versions

3.12
36.9% 401.8K
3.11
30.6% 332.7K
3.10
16.1% 174.9K
3.13
13.3% 144.3K
3.14
3.2% 35.0K

Top Countries

1. US US
730.2K
2. SG SG
75.3K
3. GB GB
60.8K
4. IE IE
37.0K
5. NL NL
34.0K
6. DE DE
27.9K
7. IN IN
24.9K
8. TH TH
21.6K
9. BR BR
20.5K
10. ES ES
14.3K
GitHub Topics
Tags from the package's GitHub repository describing what it does.

Package Information

License
MIT
First Release
July 28, 2013
Last Release
4 weeks ago
Last Commit
4 weeks ago
Latest Version
6.0.5
Total Releases
11
Contributors
44
Open PRs
19
Archived
No
Python Versions
3 3.9 3.10 3.11 3.12 3.13
Wheels
py2 py3
Keywords
python
Tracking Since
January 6, 2026
Data Updated
July 5, 2026
Data Freshness
Fresh

Links