Bug 2034168 explicit permission for file access

[rebloor]

Description

Addresses the dev-doc-needed requirements of Bug 2034168 Add explicit permission for file:-access and implement extension.isAllowedFileSchemeAccess()

Changes include:

• a release note
• update to extension.isAllowedFileSchemeAccess() to remove the note about being returned false in Firefox (this and new behavior details now in BCD). Other tidy up edits.
• update to extension to note change in permission triggers for isAllowedFileSchemeAccess and update permission details regarding private windows for isAllowedIncognitoAccess.
• note on devtools.inspectedWindow.eval() that from Firefox 153, calling eval() on a file:// URL requires the user to grant file scheme access,

Related issues and pull requests

Relating BCD changes in mdn/browser-compat-data#29776

[github-actions]

Preview URLs (4 pages)

• /en-US/docs/Mozilla/Add-ons/WebExtensions/API/devtools/inspectedWindow/eval
• /en-US/docs/Mozilla/Add-ons/WebExtensions/API/extension/isAllowedFileSchemeAccess
• /en-US/docs/Mozilla/Add-ons/WebExtensions/API/extension
• /en-US/docs/Mozilla/Firefox/Releases/153

External URLs (1)

URL: /en-US/docs/Mozilla/Firefox/Releases/153
Title: Firefox 153 release notes for developers (Nightly)

• https://bugzil.la/2034168 (1 time) (Note! This may be a new URL 👀)

(comment last updated: 2026-06-04 23:14:18)

[pepelsbey]

Looks good! Thank you 🙂

Not sure if it’s a technical review or an editorial one (it would be good to separate those), but I have a few suggestions.

[rebloor]

@pepelsbey thanks for the feedback. However, this file shouldn't be in this PR, it's in Add use of declarativeNetRequest to the "Intercept HTTP requests" guide #44301 I'm addressed your feedback there and will be removing this file from the PR shortly