Kong Cors Plugin - unable to add multiple url in the origins config

[carmine-ianniello-deltatre]

Is there an existing issue for this?

• I have searched the existing issues

Kong version ($ kong version)

KIC 3.1

Current Behavior

Hello,

I'm using Kong ingress controller 3.1 version with the Cors plugin configured as below.
When I use it with a single origin in the config field, everything works as expected, as shown in the image below.

apiVersion: configuration.konghq.com/v1
kind: KongPlugin
metadata:
  name: kong-cors-custom
config:
  origins:
  - first-url.com
  - second-url.com
  credentials: true
  max_age: 3600
  preflight_continue: false
plugin: cors

But when I try to add another origin, the Allow-Control-Allow-Origins header disappears, not allowing neither the first URL.

From my understanding the plugin should be able to add multiple origins URLs, is that right?

Expected Behavior

I'm expecting to be able to allow multiple URL with cors plugin

Steps To Reproduce

• Create the cors plugin in yaml format
• add 2 or more hostname in the origins config
• check the header in the Response headers

Anything else?

No response