Info on security issues

What are the best methods for Nextcloud instance admins to stay up-to-day on security issues around Nextcloud?

I tried by activating the weekly forum summary but this mails just include too much info which is not related to security.

Is there a forum category which I could subscribe?
What other news channel is recommended?

Thanks.

You could just subscribe to the news category of this forum: https://help.nextcloud.com/c/news

All new versions and fixes are announced here (and a bit more). In former times, there has been a mailing list for this…

You can follow the security advisories as RSS feed: