TokenValidationParameters.ValidateIssuer Property
Definition
Important
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Gets or sets a boolean to control if the issuer will be validated during token validation.
public bool ValidateIssuer { get; set; }member this.ValidateIssuer : bool with get, setPublic Property ValidateIssuer As BooleanProperty Value
Remarks
Validation of the issuer mitigates forwarding attacks that can occur when an IdentityProvider represents multiple tenants and signs tokens with the same keys. It is possible that a token issued for the same audience could be from a different tenant. For example an application could accept users from contoso.onmicrosoft.com but not fabrikam.onmicrosoft.com, both valid tenants. An application that accepts tokens from fabrikam could forward them to the application that accepts tokens for contoso. This boolean only applies to default issuer validation. If IssuerValidator is set, it will be called regardless of whether this property is true or false. The default is true.