Hi,
I see the same issue on our side.
traefik normaly uses around 100MB RAM, with Coraza Plugin its currently at 1.6GB and after some hours it looked like it brought the whole system down (its a test system so no probs), at least our monitoring couldn't record any data anymore. Which is part understandable as that system is not meant to have such a heavy load traefik instance running.
As soon as I disabled the plugin again, it went down to 100MB ram again.
So it seems like an issue either with WASM or coraza plugin.
fyi: there is a issue on github for it - High memory usage when using coraza plugin · Issue #9 · jcchavezs/coraza-http-wasm-traefik · GitHub