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// graph-permissions · CustomSecAttributeAssignment

CustomSecAttributeAssignment.ReadWrite.AllMicrosoft Graph permission · High risk

Allows the app to read and write custom security attribute assignments for all principals in the tenant without a signed in user.

Application permission

High risk

Read and write custom security attribute assignments. Allows the app to read and write custom security attribute assignments for all principals in the tenant without a signed in user.

IDde89b5e4-5b8f-48eb-8925-29c2b33bd8bd
ConsentAlways needs admin consent
RiskCan change data across the whole tenant.

Delegated permission

High risk

Read and write custom security attribute assignments. Allows the app to read and write custom security attribute assignments for all principals in the tenant on behalf of a signed in user.

IDca46335e-8453-47cd-a001-8459884efeae
ConsentNeeds admin consent
RiskCan change data across the whole tenant.

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 "de89b5e4-5b8f-48eb-8925-29c2b33bd8bd"

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 "CustomSecAttributeAssignment.ReadWrite.All"

Which apps already have it?

powershell6 lines
# Apps that hold CustomSecAttributeAssignment.ReadWrite.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 "de89b5e4-5b8f-48eb-8925-29c2b33bd8bd" |
    Select-Object PrincipalDisplayName, PrincipalId, CreatedDateTime
powershell6 lines
# Apps with delegated consent for CustomSecAttributeAssignment.ReadWrite.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 "CustomSecAttributeAssignment.ReadWrite.All" } |
    Select-Object ClientId, ConsentType, PrincipalId

Other CustomSecAttributeAssignment permissions

Check every app in your tenant → Permission explainer

Sources