From 8a5e89e24b5fed3780855a3cad8a190496f3ad5e Mon Sep 17 00:00:00 2001
From: John Maynard <jmaynard@playq.net>
Date: Wed, 1 Dec 2021 15:22:27 -0500
Subject: [PATCH] Switch Jinja2 environment for rendering before testing JSON
 to ImmutableSandboxedEnvironment Render Jinja template before checking for
 valid JSON

---
 awx/api/serializers.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index 08503db45e..f5b3e87ecf 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -4480,7 +4480,10 @@ class NotificationTemplateSerializer(BaseSerializer):
                 body = messages[event].get('body', {})
                 if body:
                     try:
-                        potential_body = json.loads(body)
+                        rendered_body = (
+                            sandbox.ImmutableSandboxedEnvironment(undefined=DescriptiveUndefined).from_string(body).render(JobNotificationMixin.context_stub())
+                        )
+                        potential_body = json.loads(rendered_body)
                         if not isinstance(potential_body, dict):
                             error_list.append(
                                 _("Webhook body for '{}' should be a json dictionary. Found type '{}'.".format(event, type(potential_body).__name__))