diff --git a/security/Security.php b/security/Security.php
index ec99a6c..205b9a0 100644
--- a/security/Security.php
+++ b/security/Security.php
@@ -158,6 +158,8 @@ class Security extends Controller {
 	 * to log in.
 	 */
 	static function permissionFailure($controller = null, $messageSet = null) {
+		self::set_ignore_disallowed_actions(true);
+
 		if(!$controller) $controller = Controller::curr();

 		if(Director::is_ajax()) {
@@ -864,4 +866,18 @@ class Security extends Controller {
 		return self::$default_login_dest;
 	}

+	protected static $ignore_disallowed_actions = false;
+
+	/**
+	 * Set to true to ignore access to disallowed actions, rather than returning permission failure
+	 * Note that this is just a flag that other code needs to check with Security::ignore_disallowed_actions()
+	 * @param $flag True or false
+	 */
+	public static function set_ignore_disallowed_actions($flag) {
+		self::$ignore_disallowed_actions = $flag;
+	}
+	public static function ignore_disallowed_actions() {
+		return self::$ignore_disallowed_actions;
+	}
+
 }
diff --git a/view/SSViewer.php b/view/SSViewer.php
index 23b1f4e..70215db 100644
--- a/view/SSViewer.php
+++ b/view/SSViewer.php
@@ -612,7 +612,9 @@ class SSViewer {
 			if(Director::isDev() || Director::is_cli() || Permission::check('ADMIN')) {
 				self::flush_template_cache();
 			} else {
-				return Security::permissionFailure(null, 'Please log in as an administrator to flush the template cache.');
+				if(!Security::ignore_disallowed_actions()) {
+					return Security::permissionFailure(null, 'Please log in as an administrator to flush the template cache.');
+				}
 			}
 		}