RE: https://hachyderm.io/@github/116088660663888747
@quentinpradet and I can finally share that we participated in Session 3 of the GitHub Secure Open Source Fund. As part of this cohort, we focused on hardening the library's security, setting up a formal Security Policy, and auditing our repository settings.
Open source sustainability isn't just about features; it's about security.
Read more on the blog: https://volochii.dev/blog/github-secure-open-source-session/
Using the new Tachyon profiler coming to Python 3.15 I profiled a one-liner to find a bottleneck, then sped up some 26-year-old code in @pillow!
https://hugovk.dev/blog/2026/faster-pillow/
#Python #python315 #Tachyon #Pillow #PythonPillow #performance
@adamchainz thanks! It is a bit of a stark contrast, isn't it? 😅
I'm hoping that being transparent about the numbers helps companies see the value in closing that gap!
I've finally launched my personal blog! 📝
To kick things off, my first post is the urllib3 2025 Annual Report. We discuss entering the "Billion-a-Month" club, our strengthened security posture, and the road to Python 3.14.
Check it out: https://volochii.dev/blog/urllib3-in-2025/
Welcome to the 2025 annual report for urllib3. I’m Illia, and this is my first time writing this update for the second most downloaded Python package. Long-time readers will recognize these reports from Seth Larson or Quentin Pradet, but this year I’m taking the baton to share what we’ve been up to. 2025 was a busy year defined by security hardening and future-proofing. We released 5 versions and merged over 100 pull requests, working to secure the library and prepare it for Python 3.14. For the first time ever, urllib3 was installed over 1 billion times per month consistently throughout the last quarter, signaling new levels of adoption for both the Python language and foundational open source libraries like urllib3.
📦 urllib3 2.6.3 is now available!
This release continues our recent series of decompression-related security fixes by mitigating decompression bombs in HTTP redirect responses (see GHSA-38jv-5279-wg99).
Also, the new version avoids indefinite sleeps with big Retry-After values and improves compatibility with popular dependents in Emscripten environments.
📦 urllib3 2.6.0 is now available!
It fixes two high-severity security issues related to decompression of response content.
Additionally, the new version:
- switched to the backports.zstd package for the zstd support on Python 3.13 and before
- added explicit support for Python 3.14 and free threading
- removed two deprecated methods
- fixed a few bugs, added new small features, and improved performance
Check details in our release notes https://github.com/urllib3/urllib3/releases/tag/2.6.0
📦 urllib3 2.5.0 is now available!
It fixes two moderate security issues:
- pool managers now properly control redirects when `retries` is passed — CVE-2025-50181 (5.3 Medium) reported by Jacob Sandum
- redirects are now controlled by urllib3 in the Node.js runtime — CVE-2025-50182 (5.3 Medium)
Additionally, the new version adds support for the zstd module in Python 3.14 and fixes issues related to shutting down responses and HTTP tunneling with IPv6.
📦 urllib3 2.4.0 is now available! It hardens certificate verification for Python 3.13+, fixes an Emscripten issue, improves own exceptions, and applies PEP 639.
It's here! The 2024 annual report for #urllib3, a relatively quiet year that included work on HTTP/2 and Web Assembly (WASM). We include our plans for Python 2 deprecation, please take a look. $3,300 worth of bounty issues exist today!
Hugo van Kemenade
Seth Larson
Quentin Pradet