https://bugzilla.wikimedia.org/show_bug.cgi?id=68372

--- Comment #19 from Tisza Gergő <[email protected]> ---
(In reply to Bawolff (Brian Wolff) from comment #18)
> What sort of injection vulnerabilities do you mean ( < and > are disallowed
> in titles. Things should be escaped before injecting into html anyways).

Quotes are allowed and can be used to break out from HTML attributes. The goal
of having a custom URL in the first place is that people can copy-paste it, so
escaping would be up to the reuser. People don't escape URLs they paste into
blog posts.

> I doubt RTL characters would cause major problems. The annoying characters
> (bidi override, rtl mark, etc) are banned from file names anyways.

Here is an example: https://he.wikipedia.org/wiki/קובץ:תוכנית הפדרציה.png
Press "reply" and try to interact with it in the edit box (like deleting some
character, adding ASCII characters). Not a major problem but an annoyance.

Plus, tofu in the editbox for more exotic scripts.

Autolinking is a bigger concern though. MediaWiki (and Gmail, Facebook, pretty
much anything else) tends to end links characters like ")" which are pretty
frequent in file names.

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