Solution - Request blocked. CSRF validation failed.

When posting I would get the error above.

I noticed in the address bar it would be updated to:

https://webcdn.pathofexile.com/forum/post-reply/

Remove: webcdn.

It should show like:

https://pathofexile.com/forum/post-reply/

Worked for me. I'd assume this could be the website?

Yeah, I have same issue since New Year

Remove webcdn. in URL

Reload page by pressing enter.

Then it will work.

It's seems to be an error in configuration of forum system.