Multiple vulnerabilities have been discovered in mediawiki. Please
review the CVE identifiers referenced below for details.
Impact
MediaWiki allows remote attackers to bypass authentication, to perform
imports from any wgImportSources wiki via a crafted POST request, to
conduct cross-site scripting (XSS) attacks or obtain sensitive
information, to inject arbitrary web script or HTML, to conduct
clickjacking attacks, to execute arbitrary PHP code, to inject arbitrary
web script or HTML, to bypass intended access restrictions and to obtain
sensitive information.
Workaround
There is no known workaround at this time.
Resolution
All MediaWiki users should upgrade to the latest version:
Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.