Communication from Mediawiki to Elgg is not secured by action tokens

[surevine-elgg]

The web server log file may contain entries of the form

"WARNING: Action mediawiki/watch was called without an action token. It is stongly recommended that you consider doing this. Plugin authors should use 'input/form' or pass is_action=true to 'output/confirmlink' or 'output/url'., referer: http://server/wiki/index.php?title=Test_page&action=myact"

This is because Mediawiki is calling an action URL within Elgg. Action URLs are usually protected by a token inserted by Elgg into the form which posts to the URL, to prevent spoofing attacks. Because Mediawiki is not within Elgg, it doesn't do this.

More investigation is needed to see if this opens up any security risks (e.g. allowing one user to edit the watch list of another user).

This issue does not affect the day-to-day functionality of the Mediawiki plugin.