Kibana unexpected session error in Firefox only

Elastic Stack Kibana
1

I have Elasticsearch and Kibana (8.17.4) under ECK (3.0.0) in Kubernetes. I'm not overwriting any ECK-managed settings for either ES or Kibana. In Firefox 138.0.1 I'm experiencing a weird issue: Kibana logs out on refresh or even on opening a dashboard with "Unexpected session error". It only happens in Firefox. I have standard configuration and all extensions disabled. Sometimes it works OK, sometimes not, but sooner or later this happens (within minutes).

Then I have another installation out of Kubernetes and the same problem takes place there, too.

In Network section in Firefox devtools I see this error: NS_BINDING_ABORTED. This doesn't show in other browsers. But as I've said, I haven't done any particular tweaking to my Firefox installation.

Is there a way to fix it on my end? Or should I report this as a bug?

Thank you.

2

Oh and I should also add that neither Kibana nor ES logs contain any information about this error (which makes sense as it obviously happens in Firefox).

3

Hey folks,

We've identified the issue as a regression in Firefox which does not play nicely with the way Kibana manages its session cookie. We have a fix in progress on the Kibana side to workaround the problem, and we've filed a bug report with Mozilla as well:

2 Likes