Steps to reproduce
According to the CSP spec, CSP should not be enforced no extensions. Cite from https://w3c.github.io/webappsec-csp/#extensions:
Policy enforced on a resource SHOULD NOT interfere with the operation of user-agent features like addons, extensions, or bookmarklets
Here’s an example to showcase the problem:
- Install Tampermonkey from https://www.microsoft.com/en-us/store/p/tampermonkey/9nblggh5162s
- Install GitHub Dark Script from https://github.com/StylishThemes/GitHub-Dark-Script/raw/master/github-dark-script.user.js
- Go to https://github.com and check the browser console, which logs this error:
Resource violated directive ‘script-src assets-cdn.github.com’ in Content-Security-Policy: inline script. Resource will be blocked.
Chrome and Firefox already implement CSP exclusion for Extension, so it’d be great if Edge would follow them too. For further reading, there’s also a Safari bug (1) and some discussion on the userscript’s issue tracker (2).
Comments and activity
- Microsoft Edge Team
Changed Assigned To to “Steven K.”
Changed Assigned To to “Sermet I.”
Changed Assigned To from “Sermet I.” to “Scott S.”
Changed Status to “Confirmed”
Our extension, 1Password, is also affected by this. It would be nice to know if there’s any progress on this.