[red-hat-konflux]

This PR contains the following updates:

Package	Change	Age	Confidence
werkzeug (changelog)	3.1.8 → 3.1.9

---

Werkzeug safe_join() allows Windows special device names

CVE-2026-102598 / GHSA-g6x2-hccm-hh4m / PYSEC-2026-4312

More information

Details

Werkzeug's safe_join function allows Windows device names as filenames when they have an empty ADS marker on NTFS.

This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact Windows allows special device names with an empty ADS marker, such as 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 NTFS, and the requested path ends with a special device name, the file will be opened successfully, but reading will hang indefinitely.

Severity

• CVSS Score: 6.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References

• https://github.com/pallets/werkzeug/security/advisories/GHSA-g6x2-hccm-hh4m
• https://nvd.nist.gov/vuln/detail/CVE-2026-102598
• https://github.com/pallets/werkzeug/pull/3309
• https://github.com/pallets/werkzeug/commit/8d77320bcdf3a34941ec06dcf16b03c065cd21b6
• https://github.com/pallets/werkzeug
• https://github.com/pallets/werkzeug/releases/tag/3.1.9

This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).

---

Werkzeug safe_join() allows Windows special device names

CVE-2026-102598 / GHSA-g6x2-hccm-hh4m / PYSEC-2026-4312

More information

Details

Werkzeug's safe_join function allows Windows device names as filenames when they have an empty ADS marker on NTFS.

This was previously reported as GHSA-hgf8-39gv-g3f2, but the added filtering failed to account for the fact Windows allows special device names with an empty ADS marker, such as 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 NTFS, and the requested path ends with a special device name, the file will be opened successfully, but reading will hang indefinitely.

Severity

• CVSS Score: 6.3 / 10 (Medium)
• Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

References

• https://github.com/pallets/werkzeug/security/advisories/GHSA-g6x2-hccm-hh4m
• https://nvd.nist.gov/vuln/detail/CVE-2026-102598
• https://github.com/pallets/werkzeug/pull/3309
• https://github.com/pallets/werkzeug/commit/8d77320bcdf3a34941ec06dcf16b03c065cd21b6
• https://github.com/pallets/werkzeug
• https://github.com/pallets/werkzeug/releases/tag/3.1.9
• https://pypi.org/project/werkzeug
• https://github.com/advisories/GHSA-g6x2-hccm-hh4m

This data is provided by OSV and the PyPI Advisory Database (CC-BY 4.0).

---

Release Notes

pallets/werkzeug (werkzeug)

v3.1.9

Compare Source

Released 2026-09-27

• safe_join on Windows does not allow special devices names with empty ADS
  markers on NTFS. :ghsa:g6x2-hccm-hh4m
• ProfilerMiddleware uses profiling.tracing on Python 3.15.
  :issue:3207
• uri_to_iri and iri_to_uri preserve empty username, password, and
  port 0. :issue:3189
• Improve performance of parse_options_header. :pr:3231
• Improve performance of parse_etags. :pr:3231
• Improve performance of parse_cookie. :pr:3231
• get_host also checks that the port is in the valid range. :pr:3236
• The int URL converter returns a 404 instead of 500 error when the value
  is longer than sys.get_int_max_str_digits(). :issue:3237
• Improve debugger PIN generation from cgroup data inside Podman.
  :issue:3245
• Authorization parsing basic auth disallows non-base64 characters.
  :pr:3248
• application/x-www-form-urlencoded form data is no longer limited to
  max_form_memory_size, only max_content_length. :pr:3251
• LimitedStream.readinto does not resize the buffer when it reads less
  than the remaining size. :pr:3253
• Rules with 10 or more converters in a single part assign matched values
  correctly. :pr:3254
• The invalid Range suffix length -0 is no longer accepted. :pr:3255

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

To execute skipped test pipelines write comment /ok-to-test.

---

Documentation

Find out how to configure dependency updates in MintMaker documentation or see all available configuration options in Renovate documentation.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This security-focused dependency update changes the Poetry lockfile to Werkzeug 3.1.9, addressing CVE-2026-102598/GHSA-g6x2-hccm-hh4m, which could cause indefinite reads on Windows NTFS through crafted paths, while also adopting the upstream release’s ancillary fixes.

File-Level Changes

Change	Details	Files
Upgrade the locked Werkzeug dependency from 3.1.8 to 3.1.9 to incorporate the upstream security fix and release updates.	Refresh the Poetry lock metadata and package hash/version entries. Pull in the Windows NTFS safe_join fix preventing access to special device names with empty ADS markers. Include upstream maintenance, compatibility, parsing, validation, and performance fixes delivered in Werkzeug 3.1.9.	poetry.lock

---

Tips and commands

Interacting with Sourcery

• Trigger a new review: Comment @sourcery-ai review on the pull request.
• Continue discussions: Reply directly to Sourcery's review comments.
• Generate a GitHub issue from a review comment: Ask Sourcery to create an
  issue from a review comment by replying to it. You can also reply to a
  review comment with @sourcery-ai issue to create an issue from it.
• Generate a pull request title: Write @sourcery-ai anywhere in the pull
  request title to generate a title at any time. You can also comment
  @sourcery-ai title on the pull request to (re-)generate the title at any time.
• Generate a pull request summary: Write @sourcery-ai summary anywhere in
  the pull request body to generate a PR summary at any time exactly where you
  want it. You can also comment @sourcery-ai summary on the pull request to
  (re-)generate the summary at any time.
• Generate reviewer's guide: Comment @sourcery-ai guide on the pull
  request to (re-)generate the reviewer's guide at any time.
• Resolve all Sourcery comments: Comment @sourcery-ai resolve on the
  pull request to resolve all Sourcery comments. Useful if you've already
  addressed all the comments and don't want to see them anymore.
• Dismiss all Sourcery reviews: Comment @sourcery-ai dismiss on the pull
  request to dismiss all existing Sourcery reviews. Especially useful if you
  want to start fresh with a new review - don't forget to comment
  @sourcery-ai review to trigger a new review!

Customizing Your Experience

Access your dashboard to:

• Enable or disable review features such as the Sourcery-generated pull request
  summary, the reviewer's guide, and others.
• Change the review language.
• Add, remove or edit custom review instructions.
• Adjust other review settings.

Getting Help

• Contact our support team for questions or feedback.
• Visit our documentation for detailed guides and information.
• Keep in touch with the Sourcery team by following us on X/Twitter, LinkedIn or GitHub.

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

---

Sourcery is free for open source - if you like our reviews please consider sharing them ✨

• X
• Mastodon
• LinkedIn
• Facebook