Entry revision localizations include unauthorized sites

[msuphilipgales]

Bug description

Entry create/edit screens build their localizations list through EntriesController::getAuthorizedSitesForCollection(), which filters collection sites to only sites the current user can view.

protected function getAuthorizedSitesForCollection($collection)
{
    return $collection
        ->sites()
        ->filter(fn ($handle) => User::current()->can('view', Site::get($handle)));
}

The entry revision preview endpoint does not use that same filtering. EntryRevisionsController builds localizations directly from every collection site:

'localizations' => $entry->collection()->sites()->map(function ($handle) use ($entry) {

Proposed fix:

- 'localizations' => $entry->collection()->sites()->map(function ($handle) use ($entry) {
+ 'localizations' => $this->getAuthorizedSitesForCollection($entry->collection())->map(function ($handle) use ($entry) {

+ protected function getAuthorizedSitesForCollection($collection)
+ {
+     return $collection
+         ->sites()
+         ->filter(fn ($handle) => User::current()->can('view', Site::get($handle)));
+ }

How to reproduce

1. Enable multisite.
2. Create a collection available on multiple sites.
3. Create a user who can view the collection/entry but cannot view every site in the collection.
4. Enable revisions for the collection.
5. View an entry revision in the Control Panel.
6. Inspect the revision preview response.

The localizations array includes all collection sites instead of only sites the user can view.

Logs

Environment

Environment
Laravel Version: 13.9.0
PHP Version: 8.5.5
Composer Version: 2.9.5
Environment: local
Debug Mode: ENABLED
Maintenance Mode: OFF
Timezone: UTC
Locale: en

Cache
Config: NOT CACHED
Events: NOT CACHED
Routes: NOT CACHED
Views: CACHED

Drivers
Broadcasting: log
Cache: file
Database: mariadb
Logs: stack / daily
Mail: log
Queue: database
Session: file

Storage
public/storage: NOT LINKED

Statamic
Addons: 4
License Key: Set
Sites: 1522 (Aardvark, Abbott Group, Abbott, Reichel and Schulist, and 1519 more)
Stache Watcher: Enabled (auto)
Static Caching: Disabled
Version: 6.19.0 PRO

Statamic Addons
ndx/statamic-simple-redirects: 1.1.0
statamic/audit-log: 1.1.0
statamic/collaboration: 2.0.1
statamic/eloquent-driver: 5.8.0

Statamic Eloquent Driver
Addon Settings: file
Asset Containers: eloquent
Assets: eloquent
Blueprints: eloquent
Collection Trees: eloquent
Collections: file
Entries: eloquent
Fieldsets: file
Form Submissions: eloquent
Forms: eloquent
Global Sets: eloquent
Global Variables: eloquent
Navigation Trees: eloquent
Navigations: eloquent
Revisions: eloquent
Sites: eloquent
Taxonomies: eloquent
Terms: eloquent
Tokens: eloquent

Installation

Existing Laravel app

Additional details

No response