Affects: Cisco Meraki integration
https://docs.elastic.co/en/integrations/cisco_meraki
Version: 1.21.0

The Meraki integration only works when not using a shared secret to authenticate the web-hook.
The issue was already reported in the community (without answer): https://discuss.elastic.co/t/cisco-meraki-webhooks-integration-fails-when-using-shared-secrets/347007

Description of the issue from the community link

I've been testing the Cisco Meraki webhooks integration lately, and while it works just fine without specifying a shared secret, it stops working immediately once any text is entered in secret_value as described in https://docs.elastic.co/en/integrations/cisco_meraki#configure-the-cisco-meraki-integration 5

As far as I can tell, this is because Cisco Meraki sends the shared secret as a JSON attribute sharedSecret, as shown in the test-mx-events.json 1 file included in the integration package:

{ "events": [ { "json": { "version": "0.1", "sharedSecret": "secret", "sentAt": "2021-10-07T08:42:00.926325Z", [...] 

http_endpoint.yml.hbs, on the other hand, looks for the shared secret 2 in a non-existing Authorization header:

{{#if secret_value}} secret.header: Authorization secret.value: "{{secret_value}}" {{/if}}