urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.
Thank you for your support.
Changes
Fixed a security issue where decompression-bomb safeguards of the streaming API were bypassed when HTTP redirects were followed. (CVE-2026-21441 reported by @D47A, 8.9 High, GHSA-38jv-5279-wg99)
Started treating Retry-After times greater than 6 hours as 6 hours by default. (urllib3/urllib3#3743)
Fixed urllib3.connection.VerifiedHTTPSConnection on Emscripten. (urllib3/urllib3#3752)
2.6.2
🚀 urllib3 is fundraising for HTTP/2 support
urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.
Thank you for your support.
Changes
Fixed HTTPResponse.read_chunked() to properly handle leftover data in the decoder's buffer when reading compressed chunked responses. (urllib3/urllib3#3734)
2.6.1
🚀 urllib3 is fundraising for HTTP/2 support
urllib3 is raising ~$40,000 USD to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects please consider contributing financially to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.
Thank you for your support.
Changes
Restore previously removed HTTPResponse.getheaders() and HTTPResponse.getheader() methods. (#3731)
Fixed a high-severity security issue where decompression-bomb safeguards of
the streaming API were bypassed when HTTP redirects were followed.
(GHSA-38jv-5279-wg99 <https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99>__)
Started treating Retry-After times greater than 6 hours as 6 hours by
default. ([#3743](https://github.com/urllib3/urllib3/issues/3743) <https://github.com/urllib3/urllib3/issues/3743>__)
Fixed urllib3.connection.VerifiedHTTPSConnection on Emscripten.
([#3752](https://github.com/urllib3/urllib3/issues/3752) <https://github.com/urllib3/urllib3/issues/3752>__)
2.6.2 (2025-12-11)
Fixed HTTPResponse.read_chunked() to properly handle leftover data in
the decoder's buffer when reading compressed chunked responses.
([#3734](https://github.com/urllib3/urllib3/issues/3734) <https://github.com/urllib3/urllib3/issues/3734>__)
2.6.1 (2025-12-08)
Restore previously removed HTTPResponse.getheaders() and
HTTPResponse.getheader() methods.
([#3731](https://github.com/urllib3/urllib3/issues/3731) <https://github.com/urllib3/urllib3/issues/3731>__)
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Bumps [urllib3](https://github.com/urllib3/urllib3) from 2.6.0 to 2.6.3.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/urllib3/urllib3/releases">urllib3's releases</a>.</em></p>
<blockquote>
<h2>2.6.3</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3 is raising ~$40,000 USD</a> to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects <a href="https://opencollective.com/urllib3">please consider contributing financially</a> to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Changes</h2>
<ul>
<li>Fixed a security issue where decompression-bomb safeguards of the streaming API were bypassed when HTTP redirects were followed. (CVE-2026-21441 reported by <a href="https://github.com/D47A"><code>@D47A</code></a>, 8.9 High, GHSA-38jv-5279-wg99)</li>
<li>Started treating <code>Retry-After</code> times greater than 6 hours as 6 hours by default. (<a href="https://redirect.github.com/urllib3/urllib3/issues/3743">urllib3/urllib3#3743</a>)</li>
<li>Fixed <code>urllib3.connection.VerifiedHTTPSConnection</code> on Emscripten. (<a href="https://redirect.github.com/urllib3/urllib3/issues/3752">urllib3/urllib3#3752</a>)</li>
</ul>
<h2>2.6.2</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3 is raising ~$40,000 USD</a> to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects <a href="https://opencollective.com/urllib3">please consider contributing financially</a> to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Changes</h2>
<ul>
<li>Fixed <code>HTTPResponse.read_chunked()</code> to properly handle leftover data in the decoder's buffer when reading compressed chunked responses. (<a href="https://redirect.github.com/urllib3/urllib3/issues/3734">urllib3/urllib3#3734</a>)</li>
</ul>
<h2>2.6.1</h2>
<h2>🚀 urllib3 is fundraising for HTTP/2 support</h2>
<p><a href="https://sethmlarson.dev/urllib3-is-fundraising-for-http2-support">urllib3 is raising ~$40,000 USD</a> to release HTTP/2 support and ensure long-term sustainable maintenance of the project after a sharp decline in financial support. If your company or organization uses Python and would benefit from HTTP/2 support in Requests, pip, cloud SDKs, and thousands of other projects <a href="https://opencollective.com/urllib3">please consider contributing financially</a> to ensure HTTP/2 support is developed sustainably and maintained for the long-haul.</p>
<p>Thank you for your support.</p>
<h2>Changes</h2>
<ul>
<li>Restore previously removed <code>HTTPResponse.getheaders()</code> and <code>HTTPResponse.getheader()</code> methods. (<a href="https://redirect.github.com/urllib3/urllib3/issues/3731">#3731</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/urllib3/urllib3/blob/main/CHANGES.rst">urllib3's changelog</a>.</em></p>
<blockquote>
<h1>2.6.3 (2026-01-07)</h1>
<ul>
<li>Fixed a high-severity security issue where decompression-bomb safeguards of
the streaming API were bypassed when HTTP redirects were followed.
(<code>GHSA-38jv-5279-wg99 <https://github.com/urllib3/urllib3/security/advisories/GHSA-38jv-5279-wg99></code>__)</li>
<li>Started treating <code>Retry-After</code> times greater than 6 hours as 6 hours by
default. (<code>[#3743](https://github.com/urllib3/urllib3/issues/3743) <https://github.com/urllib3/urllib3/issues/3743></code>__)</li>
<li>Fixed <code>urllib3.connection.VerifiedHTTPSConnection</code> on Emscripten.
(<code>[#3752](https://github.com/urllib3/urllib3/issues/3752) <https://github.com/urllib3/urllib3/issues/3752></code>__)</li>
</ul>
<h1>2.6.2 (2025-12-11)</h1>
<ul>
<li>Fixed <code>HTTPResponse.read_chunked()</code> to properly handle leftover data in
the decoder's buffer when reading compressed chunked responses.
(<code>[#3734](https://github.com/urllib3/urllib3/issues/3734) <https://github.com/urllib3/urllib3/issues/3734></code>__)</li>
</ul>
<h1>2.6.1 (2025-12-08)</h1>
<ul>
<li>Restore previously removed <code>HTTPResponse.getheaders()</code> and
<code>HTTPResponse.getheader()</code> methods.
(<code>[#3731](https://github.com/urllib3/urllib3/issues/3731) <https://github.com/urllib3/urllib3/issues/3731></code>__)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/urllib3/urllib3/commit/0248277dd7ac0239204889ca991353ad3e3a1ddc"><code>0248277</code></a> Release 2.6.3</li>
<li><a href="https://github.com/urllib3/urllib3/commit/8864ac407bba8607950025e0979c4c69bc7abc7b"><code>8864ac4</code></a> Merge commit from fork</li>
<li><a href="https://github.com/urllib3/urllib3/commit/70cecb27ca99d56aaaeb63ac27ee270ef2b24c5c"><code>70cecb2</code></a> Fix Scorecard issues related to vulnerable dev dependencies (<a href="https://redirect.github.com/urllib3/urllib3/issues/3755">#3755</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/41f249abe1ef3e20768588969c4035aba060a359"><code>41f249a</code></a> Move "v2.0 Migration Guide" to the end of the table of contents (<a href="https://redirect.github.com/urllib3/urllib3/issues/3747">#3747</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/fd4dffd2fc544166b76151a2fa3d7b7c0eab540c"><code>fd4dffd</code></a> Patch <code>VerifiedHTTPSConnection</code> for Emscripten (<a href="https://redirect.github.com/urllib3/urllib3/issues/3752">#3752</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/13f0bfd55e4468fe1ea9c6f809d3a87b0f93ebab"><code>13f0bfd</code></a> Handle massive values in Retry-After when calculating time to sleep for (<a href="https://redirect.github.com/urllib3/urllib3/issues/3743">#3743</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/8c480bf87bcefd321b3a1ae47f04e908b6b2ed7b"><code>8c480bf</code></a> Bump actions/upload-artifact from 5.0.0 to 6.0.0 (<a href="https://redirect.github.com/urllib3/urllib3/issues/3748">#3748</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/4b40616e959c0a2c466e8075f2a785a9f99bb0c1"><code>4b40616</code></a> Bump actions/cache from 4.3.0 to 5.0.1 (<a href="https://redirect.github.com/urllib3/urllib3/issues/3750">#3750</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/82b8479663d037d220c883f1584dd01a43bb273b"><code>82b8479</code></a> Bump actions/download-artifact from 6.0.0 to 7.0.0 (<a href="https://redirect.github.com/urllib3/urllib3/issues/3749">#3749</a>)</li>
<li><a href="https://github.com/urllib3/urllib3/commit/34284cb01700bb7d4fdd472f909e22393e9174e2"><code>34284cb</code></a> Mention experimental features in the security policy (<a href="https://redirect.github.com/urllib3/urllib3/issues/3746">#3746</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/urllib3/urllib3/compare/2.6.0...2.6.3">compare view</a></li>
</ul>
</details>
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Bumps urllib3 from 2.6.0 to 2.6.3.
Release notes
Sourced from urllib3's releases.
Changelog
Sourced from urllib3's changelog.
Commits
0248277Release 2.6.38864ac4Merge commit from fork70cecb2Fix Scorecard issues related to vulnerable dev dependencies (#3755)41f249aMove "v2.0 Migration Guide" to the end of the table of contents (#3747)fd4dffdPatchVerifiedHTTPSConnectionfor Emscripten (#3752)13f0bfdHandle massive values in Retry-After when calculating time to sleep for (#3743)8c480bfBump actions/upload-artifact from 5.0.0 to 6.0.0 (#3748)4b40616Bump actions/cache from 4.3.0 to 5.0.1 (#3750)82b8479Bump actions/download-artifact from 6.0.0 to 7.0.0 (#3749)34284cbMention experimental features in the security policy (#3746)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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