WICG / WICG/webpackage

<link>-based API should be subject to CSP

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#581 7 comments 0 reactions 0 assignees View on GitHub

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Description

Since <link rel="webbundle" ..> can be used to load or redirect loads of scripts it should be subject to CSPs script-src directive.
Especially the CSP nonce attribute should be verified in case a CSP restricts script loading based on nonces.

I.e. in the presence of a Content-Security-Policy script-src 'nonce-random123' header only <link rel="webbundle" nonce="random123" ..> should be allowed to execute.
Same holds true for <script type=”module” ..> or similar declarative script loading mechanisms.

/ cc @mikewest @arturjanc @koto

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Research direction

The payload names no files, tests, or implementation entry points. Begin with the proposed behavior and the CSP script-src nonce example; done should establish whether both declarative loading cases enforce the stated nonce requirement.

Written by the indexing model from the issue text.

Assessment

Domain
security, web-dev
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
25/100

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