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Update dependency werkzeug to v3.1.6 [SECURITY]#568

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nedtwigg merged 1 commit intomainfrom
renovate/pypi-werkzeug-vulnerability
Feb 28, 2026
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Update dependency werkzeug to v3.1.6 [SECURITY]#568
nedtwigg merged 1 commit intomainfrom
renovate/pypi-werkzeug-vulnerability

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@renovate renovate bot commented Feb 28, 2026

This PR contains the following updates:

Package Change Age Confidence
werkzeug (changelog) 3.1.53.1.6 age confidence

GitHub Vulnerability Alerts

CVE-2026-27199

Werkzeug's safe_join function allows Windows device names as filenames if when preceded by other path segments.

This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact that safe_join accepts paths with multiple segments, such as example/NUL.

send_from_directory uses safe_join to safely serve files at user-specified paths under a directory. If the application is running on Windows, and the requested path ends with a special device name, the file will be opened successfully, but reading will hang indefinitely.


Release Notes

pallets/werkzeug (werkzeug)

v3.1.6

Compare Source

Released 2026-02-19

  • safe_join on Windows does not allow special devices names in
    multi-segment paths. :ghsa:29vq-49wr-vm6x

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@renovate renovate bot added the py label Feb 28, 2026
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@nedtwigg nedtwigg merged commit 79a0ad9 into main Feb 28, 2026
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@renovate renovate bot deleted the renovate/pypi-werkzeug-vulnerability branch February 28, 2026 20:58
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