chore(deps): bump werkzeug from 3.1.7 to 3.1.9 in /examples/flask

[dependabot]

Bumps werkzeug from 3.1.7 to 3.1.9.

Release notes

Sourced from werkzeug's releases.

3.1.9

This is the Werkzeug 3.1.9 security fix release, which fixes security issues and bugs but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/Werkzeug/3.1.9/ Changes: https://werkzeug.palletsprojects.com/page/changes/#version-3-1-9 Milestone: https://github.com/pallets/werkzeug/milestone/46?closed=1

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

3.1.8

This is the Werkzeug 3.1.8 fix release, which fixes bugs but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/Werkzeug/3.1.8/ Changes: https://werkzeug.palletsprojects.com/page/changes/#version-3-1-8 Milestone: https://github.com/pallets/werkzeug/milestone/45?closed=1

• Request.host and get_host return the empty string if the header is missing or has invalid characters. #3142

Changelog

Sourced from werkzeug's changelog.

Version 3.1.9

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

Version 3.1.8

Released 2026-04-02

• Request.host and get_host return the empty string if the header is missing or has invalid characters. :issue:3142

Commits

• 6604c3b release version 3.1.9
• a78b30a update dependencies
• 8d77320 disallow special name with ads (#3309)
• b2a2c09 disallow special name with ads
• 4efac9d add links
• 400c23e Allow flit_core 4.x (#3261)
• 7132a19 allow flit_core 4
• 6fba87c only accept ASCII digits
• 263f5ca disallow range -0 (#3255)
• 0c419f9 disallow range -0
• Additional commits viewable in compare view

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[socket-security]

Caution

Review the following alerts detected in dependencies.

According to your organization's Security Policy, you must resolve all "Block" alerts before proceeding. It is recommended to resolve "Warn" alerts too. Learn more about Socket for GitHub.

Priority	Alert  (click "▶" to expand/collapse)	Action
	License policy violation: pypi werkzeug under CC-BY-2.5 License: CC-BY-2.5 - the applicable license policy does not allow this license (4) (werkzeug-3.1.9/src/werkzeug/debug/shared/ICON_LICENSE.md) License: CC-BY-3.0 - the applicable license policy does not allow this license (4) (werkzeug-3.1.9/src/werkzeug/debug/shared/ICON_LICENSE.md) From: examples/flask/uv.lock → pypi/flask@3.1.3 → pypi/werkzeug@3.1.9 ℹ Read more on: This package | This alert | What is a license policy violation? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Find a package that does not violate your license policy or adjust your policy to allow this package's license. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore pypi/werkzeug@3.1.9. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.	Warn
	License policy violation: pypi werkzeug under CC-BY-2.5 License: CC-BY-2.5 - the applicable license policy does not allow this license (4) (werkzeug/debug/shared/ICON_LICENSE.md) License: CC-BY-3.0 - the applicable license policy does not allow this license (4) (werkzeug/debug/shared/ICON_LICENSE.md) From: examples/flask/uv.lock → pypi/flask@3.1.3 → pypi/werkzeug@3.1.9 ℹ Read more on: This package | This alert | What is a license policy violation? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: Find a package that does not violate your license policy or adjust your policy to allow this package's license. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore pypi/werkzeug@3.1.9. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.	Warn
	Potential code anomaly (AI signal): pypi werkzeug is 63.0% likely to have a medium risk anomaly Notes: The module implements an interactive traceback/debug console that can execute arbitrary Python code through an eval path in the debugger UI, allowing code execution in the context of captured frames. It renders frame sources and variables, and can exfiltrate full tracebacks including locals/globals to an external endpoint; if reachable and improperly gated, an attacker could run arbitrary code and access sensitive data on the server. Confidence: 0.63 Severity: 0.68 From: examples/flask/uv.lock → pypi/flask@3.1.3 → pypi/werkzeug@3.1.9 ℹ Read more on: This package | This alert | What is an AI-detected potential code anomaly? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: An AI system found a low-risk anomaly in this package. It may still be fine to use, but you should check that it is safe before proceeding. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore pypi/werkzeug@3.1.9. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.	Block
	Potential code anomaly (AI signal): pypi werkzeug is 90.0% likely to have a medium risk anomaly Notes: The file src/werkzeug/debug/console.py implements an in-process interactive HTML console that executes user-provided Python code via eval/exec, capturing output for display and potentially altering global interpreter state (e.g., sys.displayhook, sys.stdout). The primary risk is remote code execution if the console is exposed to untrusted users; it should be restricted to trusted debugging contexts and not used in production or publicly accessible environments. Confidence: 0.90 Severity: 0.60 From: examples/flask/uv.lock → pypi/flask@3.1.3 → pypi/werkzeug@3.1.9 ℹ Read more on: This package | This alert | What is an AI-detected potential code anomaly? Next steps: Take a moment to review the security alert above. Review the linked package source code to understand the potential risk. Ensure the package is not malicious before proceeding. If you're unsure how to proceed, reach out to your security team or ask the Socket team for help at support@socket.dev. Suggestion: An AI system found a low-risk anomaly in this package. It may still be fine to use, but you should check that it is safe before proceeding. Mark the package as acceptable risk. To ignore this alert only in this pull request, reply with the comment @SocketSecurity ignore pypi/werkzeug@3.1.9. You can also ignore all packages with @SocketSecurity ignore-all. To ignore an alert for all future pull requests, use Socket's Dashboard to change the triage state of this alert.	Block

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