Hello,
recently I saw this edit of a template page on MediaWiki https://www.mediawiki.org/w/index.php?title=Template:RSSPost&oldid=97920... by an anon.
Do we really have the template Namespace on MediaWiki open for edits by anons?
In the past, /this /page was indeed a vey /sensitive /template because it determined the rendering of RSS feeds on MediaWiki pages. This was the reason why I was surprised yesterday, that it could be edited by someone without an account.
On /enwiki /I know many templates which are fully protected. This is why I expected that our documentation and developer MediaWiki wiki also protects Template pages. This was apparently not the case.
Regarding the Template:Repost page:
I deleted that specific page. it is not used any more, because the Extension:RSS only since a while templates from the (system messages) MediaWiki:namespace, which is protected by default.