chore(deps): [conversational-commerce-agent] Update dependency werkzeug to v3.1.5 [SECURITY]

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Confidence
werkzeug (changelog)	3.1.4 → 3.1.5

GitHub Vulnerability Alerts

CVE-2026-21860

Werkzeug's safe_join function allows path segments with Windows device names that have file extensions or trailing spaces. On Windows, there are special device names such as CON, AUX, etc that are implicitly present and readable in every directory. Windows still accepts them with any file extension, such as CON.txt, or trailing spaces such as CON .

This was previously reported as GHSA-hgf8-39gv-g3f2, but the fix failed to account for compound extensions such as CON.txt.html or trailing spaces. It also missed some additional special names.

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.

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Werkzeug safe_join() allows Windows special device names with compound extensions

CVE-2026-21860 / GHSA-87hc-h4r5-73f7

More information

Details

Werkzeug's safe_join function allows path segments with Windows device names that have file extensions or trailing spaces. On Windows, there are special device names such as CON, AUX, etc that are implicitly present and readable in every directory. Windows still accepts them with any file extension, such as CON.txt, or trailing spaces such as CON .

This was previously reported as GHSA-hgf8-39gv-g3f2, but the fix failed to account for compound extensions such as CON.txt.html or trailing spaces. It also missed some additional special names.

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.

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-87hc-h4r5-73f7
• https://nvd.nist.gov/vuln/detail/CVE-2026-21860
• https://github.com/pallets/werkzeug/commit/7ae1d254e04a0c33e241ac1cca4783ce6c875ca3
• https://github.com/pallets/werkzeug

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

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Release Notes

pallets/werkzeug (werkzeug)

v3.1.5

Compare Source

Released 2026-01-08

• safe_join on Windows does not allow more special device names, regardless
  of extension or surrounding spaces. :ghsa:87hc-h4r5-73f7
• The multipart form parser handles a \r\n sequence at a chunk boundary.
  This fixes the previous attempt, which caused incorrect content lengths.
  :issue:3065 :issue:3077
• Fix AttributeError when initializing DebuggedApplication with
  pin_security=False. :issue:3075

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