azureblog.co.uk
← cd ~/graph-permissions
// graph-permissions · Member

Member.Read.HiddenMicrosoft Graph permission · Low risk

Allows the app to read the memberships of hidden groups and administrative units without a signed-in user.

Application permission

Low risk

Read all hidden memberships. Allows the app to read the memberships of hidden groups and administrative units without a signed-in user.

ID658aa5d8-239f-45c4-aa12-864f4fc7e490
ConsentAlways needs admin consent
RiskRead access, limited to what the signed-in user can see.

Delegated permission

Low risk

Read hidden memberships. Allows the app to read the memberships of hidden groups and administrative units on behalf of the signed-in user, for those hidden groups and administrative units that the signed-in user has access to.

IDf6a3db3e-f7e8-4ed2-a414-557c8c9830be
ConsentNeeds admin consent
RiskRead access, limited to what the signed-in user can see.

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 "658aa5d8-239f-45c4-aa12-864f4fc7e490"

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 "Member.Read.Hidden"

Which apps already have it?

powershell6 lines
# Apps that hold Member.Read.Hidden 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 "658aa5d8-239f-45c4-aa12-864f4fc7e490" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for Member.Read.Hidden
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 "Member.Read.Hidden" } |
    Select-Object ClientId, ConsentType, PrincipalId

Check every app in your tenant → Permission explainer

Sources