Similar to sandboxed iframes and data: URLs, treat file:// URLs as having unique origin.
Specification
Status in Chromium
Enabled by default (tracking bug) in:
- Chrome for desktop release 45
- Chrome for Android release 45
- Android WebView release 45
Consensus & Standardization
After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.
- No signal
- No signal
- No signal
- No signals
Owners
Search tags
file url, origin, security origin, security,Last updated on 2020-11-09
Comments
There will be some visible side effects when opening documents via a file:// URL. For example - a file:// URL will no longer be able to XHR itself - two subframes navigated to the same file:// URL will no longer be able to script each other synchronously. The rationale behind this proposal is that using a filename as the security principal can be dangerous. There is no guarantee from an OS filesystem that a given filename always points to a unique object.