MediaWiki URL Redirection to Untrusted Site (Open Redirect) Vulnerability - CVE-2017-0363
Mediawiki before 1.28.1 / 1.27.2 / 1.23.16 has a flaw where Special:UserLoginreturntointerwiki:foo will redirect to external sites.
Mediawiki before 1.28.1 / 1.27.2 / 1.23.16 has a flaw where Special:UserLoginreturntointerwiki:foo will redirect to external sites.