Bump urllib3 from 2.6.2 to 2.6.3 in the pip group across 1 directory

[dependabot]

Bumps the pip group with 1 update in the / directory: urllib3.

Updates urllib3 from 2.6.2 to 2.6.3

Release notes

Sourced from urllib3's releases.

2.6.3

🚀 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 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)

Changelog

Sourced from urllib3's changelog.

2.6.3 (2026-01-07)

• 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>__)

Commits

• 0248277 Release 2.6.3
• 8864ac4 Merge commit from fork
• 70cecb2 Fix Scorecard issues related to vulnerable dev dependencies (#3755)
• 41f249a Move "v2.0 Migration Guide" to the end of the table of contents (#3747)
• fd4dffd Patch VerifiedHTTPSConnection for Emscripten (#3752)
• 13f0bfd Handle massive values in Retry-After when calculating time to sleep for (#3743)
• 8c480bf Bump actions/upload-artifact from 5.0.0 to 6.0.0 (#3748)
• 4b40616 Bump actions/cache from 4.3.0 to 5.0.1 (#3750)
• 82b8479 Bump actions/download-artifact from 6.0.0 to 7.0.0 (#3749)
• 34284cb Mention experimental features in the security policy (#3746)
• Additional commits viewable in compare view

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[github-actions]

Dependency Review

✅ No vulnerabilities or license issues or OpenSSF Scorecard issues found.

Snapshot Warnings

⚠️: No snapshots were found for the head SHA 4f7c3d6.

Ensure that dependencies are being submitted on PR branches and consider enabling retry-on-snapshot-warnings. See the documentation for more information and troubleshooting advice.

OpenSSF Scorecard

Package	Version	Score	Details
pip/urllib3	2.6.3	🟢 8.6	Details Check Score Reason Binary-Artifacts 🟢 10 no binaries found in the repo Branch-Protection 🟢 5 branch protection is not maximal on development and all release branches CI-Tests 🟢 10 27 out of 27 merged PRs checked by a CI test -- score normalized to 10 CII-Best-Practices 🟢 5 badge detected: Passing Code-Review 🟢 8 Found 19/22 approved changesets -- score normalized to 8 Contributors 🟢 10 project has 125 contributing companies or organizations Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Dependency-Update-Tool 🟢 10 update tool detected Fuzzing 🟢 10 project is fuzzed License 🟢 10 license file detected Maintained 🟢 10 30 commit(s) and 14 issue activity found in the last 90 days -- score normalized to 10 Packaging 🟢 10 packaging workflow detected Pinned-Dependencies 🟢 8 dependency not pinned by hash detected -- score normalized to 8 SAST 🟢 10 SAST tool is run on all commits Security-Policy 🟢 10 security policy file detected Signed-Releases ⚠️ 0 Project has not signed or included provenance with any releases. Token-Permissions 🟢 10 GitHub workflow tokens follow principle of least privilege Vulnerabilities 🟢 10 0 existing vulnerabilities detected

Scanned Files

• requirements.txt