_sendAdToCreative postMessage with invalid origin

[ReinoutStevens]

Type of issue

A bug where a specific banner resulted in a message event without a valid origin.

Description

We encountered a banner ad that triggered a message event without origin ( ev.origin was null ).
As a result, the _sendAdToCreative in secureCreatives.js tries to send a message with origin null, which throws an error.

Steps to reproduce

Unfortunately, it's hard to reproduce, I got the banner a couple of times before it disappeared into the void.
The stack trace from the console did point to that method each time.

Platform details

Prebid v4.43.1, but the code seems unchanged in the code in master

[ChrisHuie]

@ReinoutStevens Does this look like a similar issue to #7870 ?

[ReinoutStevens]

@ChrisHuie Yes, the error looks to be the same.

In our case it appeared to be triggered through a specific ad, and could only be reproduced for a couple of minutes on a specific device. No idea how or why the origin would be null though, or what the actual message was.

[ChrisHuie]

@ReinoutStevens closing this and consolidating in #7870.