Hi, this extension would need a security review.

The MediaWiki.org page that has been linked does not contain the link to the source code. Could you please link it? It should also be noted that an extension that has been mentioned as a dependency will need to be reviewed as well. Thank you.

Good question. I am not an experienced coder and when I read again to find out how possible to install this extention, I understand that there is no source code, that is why the extention called php-free. The extention, in my understanding, would work after installing all the dependant extentions plus creating a separate wiki pages with wikitext.

I walked through all requiled extentions on our wiki, so the one only is missing:
https://www.mediawiki.org/wiki/Extension:HTML_Tags
All the rest are installed successfuly already,

I'm not sure this is actually an extension

I think you just copy the pages it mentions to your wiki

In T6841#134818, @RhinosF1 wrote:

I think you just copy the pages it mentions to your wiki

PHP-Free_Experiment
Simply, yes, I should just copy the pages. But still, there are required extentions must be installed in order to provide a complete service.
And I found that Extension:HTML_Tags is missing on our wiki. Please install Extension:HTML_Tags. Thank you in advance.

I found this- https://www.mediawiki.org/wiki/Topic:Ucx3870iubclp1i7. So this does seem to have its source code somewhere.

TopicTags:

See https://www.mediawiki.org/wiki/Extension:TopicTags#Known_Issues. However since that is not really an extension and just requires other pages to be added and other extensions installed, It's not to much a risk. At least not if HTML tags isn't.

HTML Tags:

From an initial look at the code, while I have concerns about the nature of it, the code looks fine at a glance. It seems to be security-safe (per HTMLTags.php#L65) however like I said, I still have concerns about the nature of the extension.

PS. Sorry @R4356th for kind of taking over your task. I'll leave the rest to you.

In T6841#134827, @R4356th wrote:

I found this- https://www.mediawiki.org/wiki/Topic:Ucx3870iubclp1i7. So this does seem to have its source code somewhere.

All that is saying is what to do in order to make the extension appear in Special:Version, is you locally add that code. We definitely can't do that though, unless we create a git repository with that in it.