Update dependency vapor/vapor to from: "4.106.1"

[renovate]

This PR contains the following updates:

Package	Update	Change
vapor/vapor	patch	from: "4.106.0" -> from: "4.106.1"

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Release Notes

vapor/vapor (vapor/vapor)

v4.106.1: - Omit ACAO header instead of empty value

Compare Source

What's Changed

Omit ACAO header instead of empty value by @​grahamburgsma in #​3243

For context, Vapor currently sends an empty Access-Control-Allow-Origin (ACAO) header when the origin does not match or is set to none.

We recently had a pentest done against our Vapor server and the tester reported the following regarding the empty ACAO header:

When the header is empty, browsers might reject the request without detailed error messages, making it harder for developers to debug or even realize there is a problem. This lack of transparency can lead to extended periods of vulnerability before the issue is discovered.

Looking at some other sources as well, an empty header doesn’t appear to be a valid value and so could result in unexpected behaviour.

https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#the_http_response_headers
https://fetch.spec.whatwg.org/#http-access-control-allow-origin

This patch was released by @​0xTim

Full Changelog: vapor/vapor@4.106.0...4.106.1

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