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// graph-permissions · Sites

Sites.Read.AllMicrosoft Graph permission · High risk

Allows the app to read documents and list items in all site collections without a signed in user.

Application permission

High risk

Read items in all site collections . Allows the app to read documents and list items in all site collections without a signed in user.

ID332a536c-c7ef-4017-ab91-336970924f0d
ConsentAlways needs admin consent
RiskAs an application permission this reaches every user's data in the tenant, without anyone signed in.

Delegated permission

Medium risk

Read items in all site collections. Allows the application to read documents and list items in all site collections on behalf of the signed-in user

ID205e70e5-aba6-4c52-a976-6d2d46c48043
ConsentUsers can consent, if your consent settings allow it
RiskReads or changes the signed-in user's content, limited to what that user can access.

Least-privilege alternative

Use Sites.Selected and grant access to only the sites the app needs.

Grant it to an app

In the portal: App registrations › your app › API permissions › Add a permission › Microsoft Graph › Application permissions, then grant admin consent. Or with Graph PowerShell:

powershell5 lines
Connect-MgGraph -Scopes "Application.Read.All", "AppRoleAssignment.ReadWrite.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
$app   = Get-MgServicePrincipal -Filter "appId eq '<your app's client id>'"
New-MgServicePrincipalAppRoleAssignment -ServicePrincipalId $app.Id `
    -PrincipalId $app.Id -ResourceId $graph.Id -AppRoleId "332a536c-c7ef-4017-ab91-336970924f0d"

Ask for it when signing in

Delegated permissions act as the signed-in user, so the app can never do more than that user can.

powershell1 line
Connect-MgGraph -Scopes "Sites.Read.All"

Which apps already have it?

powershell6 lines
# Apps that hold Sites.Read.All as an application permission
Connect-MgGraph -Scopes "Application.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgServicePrincipalAppRoleAssignedTo -ServicePrincipalId $graph.Id -All |
    Where-Object AppRoleId -eq "332a536c-c7ef-4017-ab91-336970924f0d" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for Sites.Read.All
Connect-MgGraph -Scopes "Application.Read.All", "Directory.Read.All"
$graph = Get-MgServicePrincipal -Filter "appId eq '00000003-0000-0000-c000-000000000000'"
Get-MgOauth2PermissionGrant -All |
    Where-Object { $_.ResourceId -eq $graph.Id -and ($_.Scope -split " ") -contains "Sites.Read.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other Sites permissions

Check every app in your tenant → Permission explainer

Sources