Can I use exsl:document in Splunk ?

[WOOOOONG__HERO]

Hello. I am a security researcher analysing the CVE-2023-46214 vulnerability. 

I think this vulnerability have a problem using exsl:document.

So I want to block packets containing exsl:document, but do you use exsl:document in real life?

Is this a feature that is officially supported by Splunk?

[bowesmana]

https://advisory.splunk.com/advisories/SVD-2023-1104

[WOOOOONG__HERO]

Yes. I know.
But what I'm wondering is if you actually use <exsl:document>, and if you do, how you use it formally, and if you don't mind blocking packets containing that namespace.