aria-description: This attribute is an invalid ARIA attribute

[makxca]

With the plugin on I get this error when trying to use the aria-description attribute.

This attribute actually valid and referenced on MDN.

There is a relevant issue in the aria-query repo and even a relevant pull-request, but the process seems to be frozen since July.

[ljharb]

It's not that it's frozen, it's that it might require a breaking change.

Do you see the note on the MDN page you linked?

Note: aria-description is still in W3C Editor's Draft for ARIA 1.3. For the time being, continue to use aria-describedby, which has been supported since ARIA 1.1.

In other words, it's still not finalized, and probably shouldn't be used yet.